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Title: ESSENTIALS OF ORAL HISTOLOGY AND EMBRYOLOGY 5THEDITION CHIEGO TEST BANK QUESTIONS AND ANSWERS
Description: ESSENTIALS OF ORAL HISTOLOGY AND EMBRYOLOGY 5THEDITION CHIEGO TEST BANK QUESTIONS AND ANSWERS
Description: ESSENTIALS OF ORAL HISTOLOGY AND EMBRYOLOGY 5THEDITION CHIEGO TEST BANK QUESTIONS AND ANSWERS
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Essentials Of Oral Histology And Embryology 5thedition Chiego
ESSENTIALS OF ORAL HISTOLOGY AND EMBRYOLOGY
5THEDITION CHIEGO TEST BANK
1
Essentials Of Oral Histology And Embryology 5thedition Chiego
Chapter 01: Development and Structure of Cells and Tissues Chiego: Essentials of Oral
Histology and Embryology, 5th Edition
MULTIPLE CHOICE
1
...
ADP
b
...
RNA
d
...
Correct
...
Mitochondria generate energy through ATP, not RNA, production
...
DIF:
Recall REF: pp
...
Each tissue originates from mesoderm, EXCEPT one
...
Bone
b
...
Blood
d
...
Correct
...
Blood develops from mesodermal cells
...
DIF:
Recall REF: p
...
a
...
c
...
cAMP
ANS: D
Feedback
A
cAMP is the second messenger; aDNA is not
...
C
cAMP is the second messenger; dGMP is not
...
cAMP transmits information to the intracellular organelles when
activated by surface receptors on the plasma membrane
...
3
OBJ: 3
4
...
b
...
d
...
Ribosomes synthesize protein
...
C
Mitochondria generate energy
...
5
...
b
...
d
...
Correct
...
Centrioles generate microtubules; the Golgi apparatus does not
...
DIF:
Recall REF: p
...
Which phase of the cell cycle is characterized as the initial resting stage?
OBJ: 1
3
Essentials Of Oral Histology And Embryology 5thedition Chiego
a
...
c
...
S phase
G1 phase
G2 phase
Prophase ANS: B
A
B
C
D
Feedback
The S phase is characterized as the stage in which DNA synthesis is complete
...
The G1 phase is the initial resting stage
...
Prophase is characterized by four specific structural changes
...
4
4
OBJ: 1
7
...
a
...
Golgi apparatus
c
...
smooth endoplasmic reticulum ANS: B
Feedback
The Golgi apparatus is responsible for posttranslational alterations; mitochondria
A
are not
...
The Golgi apparatus makes alterations to proteins produced by the
rough endoplasmic reticulum
...
D
The Golgi apparatus is responsible for posttranslational alterations; the smooth
endoplasmic reticulum is not
...
2
8
...
b
...
d
...
ovary
uterine tube
myometrium
endometrium ANS: D
Feedback
OBJ: 1
Essentials Of Oral Histology And Embryology 5thedition Chiego
A
The ovary is the female reproductive organ, in which the ova or eggs are
produced
...
C
The myometrium is the smooth muscle that lines the uterus
...
The endometrium provides the ovum with the nourishment necessary
for implantation and growth
...
a
...
c
...
Intercalated disks are present in which type of muscle?
Cardiac
Smooth
Skeletal
Voluntary ANS: A
A
B
C
D
Feedback
Correct
...
Intercalated disks are not present in smooth muscle
...
Intercalated disks facilitate the involuntary contractions of cardiac muscle
...
15
OBJ: 4
10
...
44
b
...
46
d
...
B
Developmental abnormalities are associated with less than the normal number of
chromosomes (46)
...
The normal human cell has 46 total chromosomes
...
DIF:
Comprehension
REF: p
...
Which best describes diapedesis?
OBJ: 4
5
Essentials Of Oral Histology And Embryology 5thedition Chiego
a
...
c
...
6
Programmed cell death and fragmentation
A protective mechanism in the immunologic defense of the body
The development of a cartilage disk in the neck of each long bone
The migration of leukocytes between endothelial cells to the site of infection ANS: D
Feedback
A
Apoptosis is cell death and fragmentation into membrane-bound particles
...
C
The epiphyseal plate is a developmental disk of cartilage
...
Diapedesis is a process whereby leukocytes migrate between
endothelial cells to the site of infection
...
12
OBJ: 4
12
...
b
...
d
...
Feedback
A
Immune system cells (T cells, B cells, NK cells, and macrophages) are produced
in the bone marrow, not the spleen
...
C
Immune system cells (T cells, B cells, NK cells, and macrophages) are produced
in the bone marrow, not the lymph nodes
...
Bone marrow is the site of formation for T cells, B cells,
NK cells, and macrophages
...
a
...
c
...
Which represent the first change in shape of the embryo’s body from a flat sheet of cells?
Formation of the embryonic disk
...
Formation of cartilage
...
ANS: B
Feedback
A
The embryonic disk forms from a small inner cell mass within the blastocyst
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
B
Correct
...
The lateral
edges of the neural plate begin to elevate as folds arise dorsally
...
D
Muscle cells have begun migrating from the myotome by the 10th prenatal
week
...
10-11
OBJ: 3
14
...
b
...
d
...
B
Correct
...
They gradually differentiate into elongated, multinucleatedmuscle fibers
...
When the anterior
neural tube closes, it shows three dilations that form the primary brain vesicles
...
DIF:
Comprehension
REF: p
...
Which type of bone formation occurs through a tight matrix of collagen fibers, which
slowly calcify into bone?
a
...
Intramembranous
c
...
Interstitial growth ANS: B
Feedback
A
Bone replaces cartilage during endochondral bone development
...
7
Essentials Of Oral Histology And Embryology 5thedition Chiego
8
B
Correct
...
It is much simpler for bone cells to organize in thismanner and to form spicules
of bone through coalescence with neighboring
spicules until a bony plate is formed
...
It will remain as long as the boneis forming
...
16
...
b
...
d
...
fibroblasts
...
angioblasts
...
B
Connective tissue develops from the somites as fibroblasts migrating from either
side of the neural tube
...
D
Correct
...
The outer cells organize into a series
of elongating tubes and the inner cells become blood cells
...
15
OBJ: 3
17
...
Which is the
EXCEPTION?
a
...
Tooth dentin
c
...
Nervous system ANS: B
Feedback
A
Tooth enamel is derived from ectoderm
...
Tooth dentin is derived from mesoderm
...
C
The epidermis, hair, and nails are derived from ectoderm
...
DIF:
Comprehension
REF: p
...
a
...
c
...
Which hormone is produced by the placenta?
Follicle-stimulating hormone (FSH)
Prolactin
Progesterone
Adrenocorticotropic hormone (ACTH) ANS: C
Feedback
A
Follicle-stimulating hormone (FSH) is secreted by the anterior lobe of the
pituitary gland
...
C
Correct
...
D
Adrenocorticotropic hormone (ACTH) is produced by the anterior lobe of the
pituitary gland
...
16
OBJ: 4
TRUE/FALSE
1
...
ANS: F
2
...
4OBJ: 1
The cell may contain more than one nucleolus
...
2
OBJ: 1
3
...
ANS: T
DIF: Comprehension REF: p
...
Spindles present during mitosis are attached to centromeres
...
Recall REF: p
...
6 | p
...
10
OBJ: 1
DIF:
Comprehension
REF: p
...
ANS: T
11
...
ANS: F
10
...
4OBJ: 1
Melanocytes are responsible for skin pigment
...
Comprehension
Endoderm and ectoderm are the first two germ layers to develop
...
DIF:
Fertilization takes place in the distal part of the uterine tube
...
DIF: Comprehension REF: p
...
ANS: F
6
...
15OBJ: 4
The foramen ovale closes during the third week of prenatal life
...
15OBJ: 4
12
...
ANS: T
13
...
15OBJ: 4
Smooth muscle is consciously controlled
...
REF: p
...
15OBJ: 4
Tissues are most susceptible to teratogens during the proliferative period
...
Comprehension
The cardiovascular system originates from chondroblasts
...
DIF:
DIF:
Recall REF: p
...
ANS: T
DIF:
Comprehension
REF: p
...
Simple squamous epithelium functions as a lining in which location?
a
...
Vagina
c
...
Pharynx
ANS: C
A
B
C
D
Feedback
The mouth is lined with stratified squamous epithelium
...
Correct
...
The pharynx is lined with stratified squamous epithelium
...
20
2
...
b
...
Which cell supports the nervous system?
Myoblast
Neuroglia
Leukocyte
OBJ: 1
d
...
Correct
...
Neuroglial cells, not leukocytes, support the nervous system
...
DIF:
Recall REF: p
...
Connective tissue proper is classified as
OBJ: 1
...
dense, striated, or smooth
b
...
dense, loose, or loose with special properties
d
...
Connective tissue is classified as dense, loose, or loose with special properties
...
Connective tissue is loose, dense, or loose with special properties
...
DIF:
Recall REF: p
...
What are the three types of muscle tissue?
a
...
Striated, voluntary, and smooth
c
...
Voluntary, involuntary, and striated
ANS: A
A
B
C
D
Feedback
Correct
...
Muscle tissue is classified as cardiac, skeletal, and smooth
...
Muscle tissue is classified as cardiac, skeletal, and smooth
...
21
5
...
b
...
d
...
18
OBJ: 1
6
...
1 to 2
b
...
5 to 9
d
...
A
B
C
D
Feedback
Buccal mucosa is replenished every 10 to 14 days, as opposed to 1 to 2 days
...
Buccal mucosa is replenished every 10 to 14 days, as opposed to 5 to 9 days
...
Buccal mucosa is replenished every 10 to 14 days
...
18
OBJ: 1
7
...
1 to 3
b
...
7 to 9
d
...
A
B
C
D
Feedback
Junctional epithelium renews every 4 to 6 days, rather than 1 to 3 days
...
The junctional epithelium of the gingiva is renewed every 4 to 6 days
...
Junctional epithelium renews every 4 to 6 days, rather than 10 to 13 days
...
18
8
...
b
...
Cuboidal
d
...
C M
Correct
...
The term stratified describes several layers of cells
...
The term columnar describes a column-shaped cell
...
18
OBJ: 2
9
...
Simple
b
...
Squamous
d
...
B
Correct
...
C
Squamous epithelial cells are characterized as flat, scale-shaped cells
...
DIF:
Recall REF: pp
...
All body sensations are relayed to the
a
...
afferent; efferent systems
c
...
sympathetic; parasympathetic divisions
ANS: A
and the
...
Sensations received anywhere in the body are relayed to the brain and
the spinal cord
...
The brain and spinal cord relay all sensations transmitted within the body
...
DIF:
Comprehension
REF: p
...
Impulses conducted from the periphery of the body (e
...
, muscles, glands) to the central
nervous system (CNS) are conducted through which system?
a
...
Somatic
c
...
Autonomic
ANS: C
TEST BANK
DIF:
Recall REF: p
...
a
...
c
...
Impulses pass from the CNS to involuntary muscles via the system
...
Afferent (sensory) nerve processes carry impulses from the peripheral muscles to the
B
CNS
...
D
Correct
...
DIF:
Comprehension
REF: p
...
a
...
Which body system relies on neural stimuli to function?
Vascular
Digestive
Essentials Of Oral Histology And Embryology 5thedition Chiego
c
...
Respiratory
ANS: C
A
B
C
D
Feedback
The endocrine, not vascular, system depends on neural stimuli to function
...
Correct
...
The endocrine, not respiratory, system depends on neural stimuli to function
...
a
...
29
OBJ: 2
b
...
Small intestine
d
...
Nutrient absorption takes place in the large intestine, not the stomach
...
Correct
...
DIF:
Comprehension
REF: p
...
Internal organs (viscera) receive most of their neural impulses from which nervous
system?
a
...
Sensory
c
...
Autonomic
17
Essentials Of Oral Histology And Embryology 5thedition Chiego
18
B
Afferent (sensory) nerve processes carry impulses from the peripheral muscles to the
CNS
...
D
Correct
...
DIF:
Comprehension
REF: p
...
Each is part of a neuron EXCEPT one
...
Axon
b
...
Dendrite
d
...
Correct
...
The dendrite receives nerve impulses
...
DIF:
Comprehension
17
...
20-22
OBJ: 2
a
...
Endomysium
c
...
Connective tissue
ANS: C
Feedback
A myelin sheath protects and insulates axons located outside the CNS; bone does not
...
C
Correct
...
D
A myelin sheath protects and insulates axons located outside the CNS;
connective tissue does not
...
19
OBJ: 2
18
...
b
...
d
...
ANS: D
A
B
C
D
Feedback
Neuroglia cells are significantly more, not slightly less, numerous than neurons
...
Neuroglia cells are significantly more, not less, numerous than neurons
...
Neuroglia cells are 5- to 50-fold more numerous than neurons
...
19
OBJ: 2
19
...
21
b
...
30
d
...
The spinal cord consists of 31, not 22, segments
...
Correct
...
DIF:
Recall REF: p
...
Ligaments and tendons are coNmpRoseId ofGwhBic
...
Neural
b
...
Epithelial
d
...
Ligaments and tendons are made of dense connective, not muscle, tissue
...
Correct
...
DIF:
Comprehension
REF: p
...
Which of the following is not a type of cartilage?
a
...
Elastic
c
...
Hyaline
ANS: A
A
B
C
D
Feedback
Correct
...
Elastic cartilage can be found in the epiglottis
...
Hyaline cartilage can be found in the nose
...
20
OBJ: 2
22
...
Thyroid
b
...
Pancreas
d
...
Correct
...
The pancreas is part of the endocrine, not lymphatic, system
...
DIF:
Comprehension
REF: p
...
Which of the following is not a major function of the urinary system?
a
...
Controls blood pressure TEST BANK
c
...
Controls urine composition
ANS: C
Feedback
A
Blood volume control is a major function of the urinary system
...
C
Correct
...
D
Urine composition is a major function of the urinary system
...
33
OBJ: 3
24
...
Excretes waste products
b
...
Supplies a framework for muscle and ligament attachments
d
...
A major function of the skin is excretion of waste products (e
...
, carbon dioxide,
water, salts, urea)
...
C
The skeletal system supplies the framework for muscle and ligament
attachments
...
DIF:
Comprehension
REF: p
...
a
...
Which organ system is the largest?
Digestive
Endocrine
OBJ: 3
Essentials Of Oral Histology And Embryology 5thedition Chiego
c
...
Integumentary
ANS: D
Feedback
A
The integumentary (skin) system is larger than the digestive system
...
C
The integumentary (skin) system is larger than the respiratory system
...
The integumentary (skin) system is the largest organ system in the
human body
...
28 OBJ: 3
TEST BANK
26
...
Which is the
EXCEPTION?
a
...
Dehydration of food
c
...
Compress food into solid waste
ANS: C
A
B
C
D
Feedback
The large intestine functions in the absorption of nutrition
...
Correct
...
Food is compressed into solid waste in the large intestine
...
29
OBJ: 2
27
...
Dendrites
b
...
Cilia
d
...
B
Neuroglial cells protect and support nerve cells
...
Cilia move particulate substances to the pharynx and out of the
respiratory system
...
DIF:
Comprehension
REF: p
...
Blood returns to the heart through
a
...
b
...
c
...
d
...
ANS: B
Feedback
A
Capillaries are thin tubes formed by a single layer of highly permeable endothelial cells
...
B
Correct
...
The pressure of the
venous system is low and the walls of veins are thin
...
e ChearMt under high pressure
...
D
Smaller muscular arteries carry blood from the heart
...
29-30
OBJ: 2
29
...
Neural
b
...
Connective
d
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
24
B
Simple squamous epithelium lines the blood vascular and respiratory systems, kidney,
most glands, and intestine
...
C
Correct
...
D
The three types of muscle—striated, smooth, and cardiac—are differentiated according to
the shape of the cells, matrix, and their functions in the body
...
18
OBJ: 1
30
...
The CNS is composed of the brain and the spinal cord
...
The CNS is composed of the brain, but not the spinal cord
...
The efferent system carries information from the peripheral nervous system to the CNS
...
The somatic nervous system carries impulse from the CNS to involuntary muscles
...
The CNS is the control center of the nervous system and comprises brain and
spinal cord
...
B
The CNS is composed of the brain AND the spinal cord
...
D
The efferent autonomic nervous system carries impulses from the CNS to involuntary
muscles
...
27-28
OBJ: 2
N R I G B
...
Which layer of epithelium is the deepest, germinating layer?
a
...
Basal layer
c
...
Clear layer
ANS: B
Essentials Of Oral Histology And Embryology 5thedition Chiego
Feedback
A
The spinous layer is called stratum spinosum
...
B
Correct
...
C
The granular layer contains cells with keratohyalin granules
...
DIF:
Comprehension
REF: p
...
a
...
c
...
Which organ system secretes and regulates hormones in the blood?
Exocrine
Endocrine
Lymphatic system
Neural system
ANS: B
Feedback
A
The exocrine system consists of sweat glands
...
A basic function of endocrine glands is to secrete hormones into the vascular
circulation
...
C
The lymphoid organs are part of the immune system
...
D
The neural system transmits nerve impulses throughout the body
...
31
OBJ: 3
TRUE/FALSE
1
...
ANS: T
2
...
20
OBJ: 2
Bone is calcified connective tissue
...
20
OBJ: 2
25
Essentials Of Oral Histology And Embryology 5thedition Chiego
3
...
ANS: F
DIF:
CoNmUpRreSheInsNioGnTB
...
24
4
...
ANS: F
DIF:
Comprehension
REF: p
...
Which defines the term synchondrosis?
a
...
b
...
c
...
d
...
ANS: D
Feedback
A
Reichert’s cartilage is the rod-shaped cartilage of the hyoid or second arch
...
C
Syndesmosis is a band of connective tissue containing osteogenic cells
...
Synchondrosis is an articulation in which new cartilage is formed in the center of
the suture, whereas peripheral cartilage is transformed into bone
...
45
OBJ: 2
2
...
b
...
Sesamoid
d
...
Membrane (or flat) bones form a protective covering for the brain; dermal bones do not
...
D
Membrane (or flat) bones form a protective covering for the brain; sesamoid bones do
DIF:
Recall REF: p
...
Membrane (or flat) bones form a protective covering for the brain
...
In the first 20 weeks, the prenatal mandible articulates with which bone(s)?
a
...
Malleus
c
...
Both A and B
ANS: D
Feedback
A
The prenatal mandible articulates at the contact point of the malleus and incus for the first
20 weeks of life
...
C
The prenatal mandible articulates at the contact point of the malleus and incus for the first
20 weeks of life
...
The prenatal mandible articulates at the contact point of the malleus and incus
for the first 20 weeks of life
...
41
OBJ: 1
4
...
Inferior hyoid
b
...
Tissues that form the cheeks
d
...
36
OBJ: 1
5
...
Masseter
b
...
Orbicularis oculi
d
...
B
The temporalis is a muscle of mastication; the orbicularis oculi is not
...
The muscles of mastication include the masseter, temporalis, and lateral
pterygoid muscles
...
D
The lateral pterygoid is a muscle of mastication; the orbicularis oculi is not
...
39
6
...
b
...
The face develops in the
first to third
fourth to seventh
eighth to eleventh
OBJ: 1
prenatal weeks
...
twelfth to fourteenth
ANS: B
A
B
C
D
Feedback
The face develops in the first to third prenatal weeks
...
The face develops in the fourth to seventh prenatal weeks
...
The face develops in the twelfth to fourteenth prenatal weeks
...
36
OBJ: 2
7
...
I
b
...
III
d
...
The thymus gland arises from the third, not the second, branchial arch
...
The thymus gland arises from the third branchial arch
...
DIF:
Recall REF: p
...
C1 M
USNT
O
8
...
I and II
b
...
III and IV
d
...
Correct
...
The third and fourth branchial arches form the hyoid bone
...
DIF:
Comprehension
REF: p
...
The primitive mouth is known as the
...
basion
b
...
stomodeum
d
...
The sella turcica is a saddle-shaped depression in the sphenoid bone
...
The stomodeum is the primitive mouth
...
DIF:
Recall REF: p
...
After the fifth prenatal week, the first and fifth branchial arches grow toward each other
and over other arches
...
a
...
b
...
c
...
d
...
ANS: D
Feedback
A
The first statement is false
...
B
The second statement is true
...
D
Correct
...
DIF: Comprehension
REF: p
...
Which bones support the palatine shelf?
a
...
Temporal
c
...
Mandibular
ANS: A
A
B
C
D
Feedback
Correct
...
The maxillary, not temporal, bones grow medially to support the palatine shelf
...
The maxillary, not mandibular, bones grow medially to support the palatine shelf
...
42
12
...
b
...
The stomodeum first appears in the week of prenatal development
...
32
eighth
ANS: B
Feedback
A
The fourth week of prenatal development is marked by the development of the primitive
mouth (stomodeum)
...
The stomodeum forms in the fourth week of prenatal development
...
D
The fourth week of prenatal development is marked by the development of the primitive
mouth (stomodeum)
...
36
OBJ: 1
13
...
maxilla
b
...
temporal bone
d
...
Feedback
A
Meckel’s cartilage provides a framework for the developing mandible
...
Meckel’s cartilage provides a framework for the developing mandible
...
D
Meckel’s cartilage provides a framework for the developing mandible
...
42-44
OBJ: 2
14
...
a
...
common carotid arteries
c
...
dorsal aorta, common carotid arteries, and pulmonary blood vessels
ANS: B
A
B
Feedback
The dorsal aorta arises from the fourth, not the third, pharyngeal arch
...
The common carotid arteries arise from the third pharyngeal arch
...
D
Blood vessels in the third pharyngeal arch form only the common carotid arteries, not the
dorsal aorta or pulmonary blood vessels
...
38
OBJ: 1
15
...
a
...
third; fourth
c
...
second; fifth
ANS: A
Feedback
A
Correct
...
B
The superior parathyroid gland develops from the fourth pharyngeal pouch; whereas the
inferior parathyroid develops from the third
...
D
The superior parathyroid gland develops from the fourth pharyngeal pouch; whereas the
inferior parathyroid develops from the third
...
47
OBJ: 1
16
...
Insulin
b
...
Dopamine
d
...
e CthyrMoid, which originates from the
ultimobranchial body
...
Calcitonin is produced by the thyroid, which originates from the ultimobranchial
body
...
D
Calcitonin, not testosterone, is produced by the thyroid, which originates from the
ultimobranchial body
...
38
OBJ: 1
17
...
First
b
...
Third
d
...
The first pharyngeal arch is termed the mandibular arch because it will later
form the bony mandible and maxilla and the associated muscles of mastication, nerves, and
blood supply
...
C
The third, fourth, and fifth pharyngeal arches consist of paired right and left bars that are
divided before they reach the midline by the presence of the bulging
heart
...
DIF:
Recall REF: p
...
The cranial base is determined by drawing a line from the nasal bone (nasion) to which
structure?
a
...
Tragus of the ear
c
...
Sella turcica
ANS: D
A
Feedback
The external auditory canal is not a landmark used to determine the cranial base
...
C
The petrous portion of the temporal bone is not a landmark used to determine the cranial
base
...
The cranial base is identified by drawing a line from the nasal bone to sella
turcica
...
s CglOanMd (pituitary gland)
...
DIF:
Recall REF: p
...
The heart begins beating at the end of which week?
a
...
Fourth
c
...
Eighth
ANS: B
A
B
C
D
Feedback
The heart has not yet started beating by the end of the second week
...
The heart has already started beating prior to the end of the sixth week
...
DIF:
Recall REF: p
...
Each of the following sutures is a facial suture EXCEPT one
...
Frontomaxillary
b
...
Zygomaticomaxillary
d
...
Feedback
The frontomaxillary suture is a facial suture between the frontal and maxillary bones
...
The sagittal suture is between the parietal bones
...
The zygomaticomaxillary suture is a facial suture between the zygomatic and maxillary
Essentials Of Oral Histology And Embryology 5thedition Chiego
36
D
The zygomaticotemporal suture is a facial suture between the zygomatic and temporal
bones
...
45-46
OBJ: 2
21
...
Simple
b
...
Synchondrosis
d
...
B
A serrated suture is an iNnterRdigiItatinGg tyBp
...
C
A synchondrosis is not a sUutuSre oNf theTface
...
D
Correct
...
DIF:
Recall REF: p
...
A pharyngeal fistula opens to drain on the:
a
...
b
...
c
...
d
...
ANS: C
Feedback
A
Pharyngeal fistulas do not open to drain on the cheek
...
C
Correct
...
These defects may
also open in the pharynx
...
DIF:
Comprehension
REF: p
...
Which gland regulates the body’s calcium balance?
Essentials Of Oral Histology And Embryology 5thedition Chiego
a
...
Parathyroid
c
...
Adrenal
ANS: B
Feedback
A
The thyroid gland produces hormones important in growth, development, and
metabolism
...
The parathyroid glands regulate calcium balance throughout life
...
C
The pancreas produces insulin to regulate glucose levels in the blood
...
DIF:
Comprehension
REF: p
...
Sutures are fibrous joints
...
C M
OBJ: 2
2
...
REF: pp
...
DIF:
Comprehension
REF: p
...
ANS: T
DIF:
Recall REF: p
...
The mandible develops from the second branchial arch
...
38
DIF:
Comprehension
REF: p
...
ANS: T
DIF:
Recall REF: p
...
The glossopharyngeal nerve (IX) provides taste sensation to the anterior two thirds of the
tongue
...
42
OBJ: 1
7
...
ANS: F
8
...
36 OBJ: 1
Meckel’s cartilage acts as a framework for the developing mandible
...
42 OBJ: 2
Essentials Of Oral Histology And Embryology 5thedition Chiego
39
Chapter 04: Development of the Face and Palate
Chiego: Essentials of Oral Histology and Embryology, 5th Edition
MULTIPLE CHOICE
1
...
The heart begins to beat
...
The bilateral placodes develop into nostrils
...
The palatine shelves grow medially and contact the tongue
...
The eyes move from the side of the face to the front of the face
...
B
Correct
...
C
The palatine shelves grow medially and contact the tongue in the seventh, not the fifth,
prenatal week
...
DIF:
Comprehension
REF: p
...
a
...
Mylohyoid
c
...
Zygomatic major
ANS: C
TEST BANK
A
B
C
D
week
...
The orbicularis oris, not mylohyoid, forms around the oral pit in the sixth prenatal week
...
The orbicularis oris forms around the oral pit in the sixth prenatal week
...
50
40
OBJ: 1
3
...
a
...
behavioral
c
...
environmental
ANS: D
Feedback
A
Social factors are not associated with palatal and facial clefts; genetic and environmental
factors are associated with palatal and facial clefts
...
C
Age-related factors are not associated with palatal and facial clefts; genetic and
environmental factors are associated with palatal and facial clefts
...
Genetic and environmental factors play a key role in the development of palatal
and facial clefts
...
55
OBJ: 4
4
...
Which is the EXCEPTION?
a
...
VII
c
...
X
ANS: C
Feedback
A
The trigeminal (V) nerve innervates the tongue in conjunction with cranial nerves VII,
IX, X, and XII
...
C
Correct
...
nC
...
D
The vagus (X) nerve innervates the tongue in conjunction with cranial nerves V, VII, IX,
and XII
...
54
41
OBJ: 3
5
...
Oblique groove extending from the nostrils to the eyes
b
...
Zone of fusion that binds the maxillary and medial processes
d
...
B
The medial nasal process is called the philtrum
...
The nasal fin is a zone of fusion that binds the maxillary and medial processes of
the lip
...
DIF:
Comprehension
REF: p
...
The thyroid gland descends to the front of the trachea, attached to the tongue by the
thyroglossal
...
duct
b
...
fistula
d
...
The thyroglossal duct connects the thyroid gland to the tongue during its
migration to the front of the trachea
...
C
The thyroglossal duct, not fistula, connects the thyroid gland to the tongue during its
migration to the front of the trachea
...
DIF:
Comprehension
REF: p
...
Which best defines the term fusion?
a
...
The enzymatic action that results in self-destruction
c
...
The period of growth in wNhUicRhSthIeNfaGceTbBe
...
Fusion is best defined as a merging of adjacent tissues
...
Fusion is best defined as the merging of adjacent tissues
...
DIF:
Comprehension
REF: p
...
A swelling that opens on the surface of the neck is called a thyroglossal
a
...
duct
c
...
fistula
ANS: D
A
B
C
Feedback
A thyroglossal fistula, not cyst, opens on the surface of the neck
...
A thyroglossal fistula, not gland, opens on the surface of the neck
...
A thyroglossal fistula opens on the surface of the neck
...
55
9
...
lip
b
...
mandible
d
...
OBJ: 3
...
Clefting of the lip, palate, and mandible are all possible
...
Correct
...
DIF:
Comprehension
10
...
b
...
d
...
56
OBJ: 4
weeks of gestation
...
52
OBJ: 2
11
...
Fourth
b
...
Sixth
d
...
The heart begins to beat, pumping blood, in the fourth prenatal week
...
C
D
The heart begins to beat in the fourth, not the sixth, prenatal week
...
DIF:
Recall REF: p
...
The second pharyngeal arch is also known as the
a
...
inferior
c
...
mandibular
ANS: A
arch
...
The hyoid arch is another name for the second pharyngeal arch
...
The second pharyngeal arch is also known as the hyoid, not the superior, arch
...
DIF:
Comprehension
REF: p
...
Auricular hillocks develop near which location?
a
...
Tuberculum impar
c
...
Oronasal optic groove TEST BANK
ANS: A
Feedback
A
Correct
...
B
In the sixth prenatal week, auricular hillocks form around the external ear canal not
tuberculum impar
...
D
In the sixth prenatal week, auricular hillocks form around the external ear canal not
oronasal optic groove
...
50
OBJ: 1
Essentials Of Oral Histology And Embryology 5thedition Chiego
45
14
...
frontonasal process
...
philtrum
...
medial nasal process
...
lateral nasal process
...
The frontal area becomes known as the frontonasal process during the fifth
week
...
They develop into nostrils as the tissues around
these placodes grow, resulting in two slits opening into the oral pit
...
The medial nasal process is called the philtrum
...
The tissue medial to the
pits is the medial nasal process
...
The tissue lateral to the
pits is the lateral nasal process
...
50
OBJ: 1
15
...
alveolar bone
...
anterior nasal spine
...
palate
...
nasal septum
...
B
The anterior spine is located on the exterior surface of the skull at the base of the
nose
...
The palate is the tissue that separates the oral and nasal cavities and can be
divided into a hard palate, which has a bony base, and the soft palate, which has a muscular base
...
DIF:
Recall REF: p
...
The thyroid gland originates from
a
...
b
...
c
...
d
...
ANS: A
Feedback
A
The thyroid gland develops as an epithelial proliferation from the foramen cecum on the
surface of the tongue at the junction of the body and base
...
C
The external ear arises from the auricular hillocks
...
DIF:
Recall REF: p
...
Each of the following is part of Waldeyer’s tonsillar ring EXCEPT one
...
Lingual tonsil
b
...
Pharyngeal tonsil
d
...
B
The palatine tonsil forms part of the ring of tonsils in the pharynx known as Waldeyer’s
tonsillar ring
...
D
Correct
...
Foramen
cecum is located on the surface of the tongue at the junction of the body and base
...
DIF:
Comprehension
REF: p
...
The word for programmed cell death during palatal shelf elevation and closure is
Essentials Of Oral Histology And Embryology 5thedition Chiego
47
a
...
b
...
c
...
d
...
ANS: C
TEST BANK
Feedback
A
Palatine shelf closure or fusion occurs when the palatine shelves have a final growth
surge until they contact in the midline
...
C
Correct
...
It occurs, for example, during lip fusion (with the destruction of the
nasal fin) and in palatine shelf fusion (with the destruction of
the midline epithelial barrier between left and right palatine shelves)
...
DIF:
Comprehension
REF: p
...
In which direction do the palatine shelves grow on contact with the tongue in the seventh
prenatal week?
a
...
Downward
c
...
Posteriorly
ANS: B
Feedback
A
The palatine shelves do not grow upward when they contact the tongue
...
When the palatine shelves contact the tongue, they grow downward along either
side of the tongue
...
D
The palatine shelves do not grow posteriorly when they contact the tongue
...
52
OBJ: 2
Essentials Of Oral Histology And Embryology 5thedition Chiego
48
TRUE/FALSE
1
...
ANS: T
2
...
50 OBJ: 4
The tongue’s immovable base develops from the first branchial arch
...
54 OBJ: 3
3
...
mCatOioMn
...
55 OBJ: 4
4
...
ANS: F
5
...
55 OBJ: 4
DIF:
Comprehension
REF: p
...
55 OBJ: 3
DIF:
Comprehension
REF: p
...
ANS: T
10
...
ANS: F
9
...
ANS: T
8
...
52 OBJ: 2
Cleft palate will not occur without cleft lip
...
Comprehension
White males develop a cleft lip more often than white females
...
DIF:
DIF:
Comprehension
REF: p
...
ANS: F
DIF:
Comprehension
REF: p
...
Which tissue does not support the dentition?
a
...
Cementum
c
...
Periodontal ligament
ANS: A
Feedback
A
Correct
...
B
Cementum is a supportive tissue
...
D
The periodontal ligament is a supportive tissue
...
59
OBJ: 3
2
...
b
...
Cap, bell, bud
d
...
The correct sequence of the stages in tooth formation is bud, cap, bell
...
The correct sequence of the stages in tooth formation is bud, cap, bell
...
DIF:
Recall REF: pp
...
Odontoblasts are derived from which type of cell?
a
...
Neural crest
c
...
Oral epithelial
ANS: B
A
B
Feedback
Odontoblasts are derived from neural crest cells, not follicular cells
...
Odontoblasts are derived from neural crest cells
...
Odontoblasts are derived from neural crest cells, not oral epithelial cells
...
60-61
OBJ: 1
4
...
a
...
surrounds the apical opening of the dental pulp
c
...
deposits an enamel matrix along the dentoenamel junction
ANS: B
Feedback
A
The epithelial diaphragm surrounds the apical opening of the dental pulp during root
development
...
The epithelial diaphragm surrounds the apical opening of the dental pulp during
root development
...
D
The epithelial diaphragm surrounds the apical opening of the dental pulp during root
development
...
a
...
68-69
OBJ: 2
operates as a blueprint or pattern to guide root formation
...
51
The primary cuticle
TEST BANK
c
...
Hertwig’s epithelial root sheath
ANS: D
Feedback
A
Hertwig’s epithelial root sheath, not predentin, determines the size, shape, and number of
roots during formation
...
C
Hertwig’s epithelial root sheath, not reduced enamel epithelium, determines the size,
shape, and number of roots during formation
...
Hertwig’s epithelial root sheath, not predentin, determines the size, shape, and
number of roots during formation
...
68-69
OBJ: 2
6
...
b
...
d
...
B
Tertiary dentin is deposited by odontoblasts in response to trauma
...
The reduced enamel epithelium is a fused layer of ameloblasts, epithelium, and
stratum intermedium, which covers the enamel until eruption
...
DIF:
Comprehension
REF: p
...
Which cells of the enamel organ assist ameloblasts in forming enamel?
Essentials Of Oral Histology And Embryology 5thedition Chiego
52
a
...
Stratum intermedium
c
...
Outer enamel epithelial
ANS: B
A
B
C
D
Feedback
The stratum intermedium cells support ameloblasts in forming enamel
...
The stratum intermedium cells support ameloblasts in forming enamel
...
The stratum intermedium cells support ameloblasts in forming enamel
...
CppO
...
Predentin calcifies to form dentin within
a
...
24
c
...
72
ANS: B
hours
...
B
Correct
...
C
Predentin calcifies to form dentin 24 (not 48) hours after deposition
...
DIF:
Comprehension
REF: p
...
a
...
c
...
Stratum intermedium and stellate reticulum cells
Essentials Of Oral Histology And Embryology 5thedition Chiego
53
ANS: C
Feedback
A
The inner and outer enamel epithelial cells fuse to form the root sheath; ameloblast and
odontoblast cells do not
...
C
Correct
...
D
The inner and outer enamel epithelial cells fuse to form the root sheath; stratum
intermedium and stellate reticulum cells do not
...
68
OBJ: 2
10
...
Secretion
b
...
Maturation
d
...
Tomes processes appear at the apical end of ameloblasts in the secretory stage of
differentiation
...
oCf amMeloblasts in the secretory, not
protection, stage of differeUntiaStionN
...
D
Tomes processes appear at the apical end of ameloblasts in the secretory, not
organization, stage of differentiation
...
63
OBJ: 2
11
...
Molar
b
...
Canine
d
...
Permanent molars do not succeed primary teeth; they form from the general
lamina
...
C
Permanent canines succeed primary teeth; they form from the successional lamina
...
DIF:
Comprehension
REF: p
...
Which layer of the enamel organ is most closely associated with blood vessels?
a
...
Stratum intermedium
c
...
Outer enamel epithelium
ANS: D
Feedback
The outer enamel epithelial cells organize a network of capillaries that nourish ameloblast
A
cells
...
C
The outer enamel epithelial cells organize a network of capillaries that nourish ameloblast
cells
...
The outer enamel epithelial cells organize a network of capillaries that nourish
ameloblast cells
...
60
OBJ: 1
13
...
a
...
C M
b
...
dentin with the alveolar bone proper
d
...
B
Correct
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
55
C
Accessory root canals connect the pulp tissue to the periodontal ligament as opposed to
connecting dentin to alveolar bone proper
...
DIF:
Comprehension
REF: p
...
a
...
c
...
Which sequence reflects the correct order of appearance?
Predentin, ameloblasts, enamel, odontoblasts
Ameloblasts, enamel, odontoblasts, predentin
Ameloblasts, odontoblasts, predentin, enamel
Odontoblasts, enamel, ameloblasts, predentin
ANS: C
A
B
C
D
Feedback
Ameloblasts appear first, followed by odontoblasts, predentin, and enamel
...
Correct
...
Ameloblasts appear first, followed by odontoblasts, predentin, and then enamel
...
60-62
OBJ: 2
15
...
divide
b
...
expand
d
...
A
B
C
D
Feedback
The dental lamina degenerates, not divide, after the enamel organ differentiates
...
The dental lamina degenerates, not expand, after the enamel organ differentiates
...
The dental lamina degenerates after the enamel organ differentiates
...
Cpp
...
Which of the following best defines the primary cuticle?
a
...
b
...
c
...
d
...
ANS: C
Feedback
A
A mature, mineralized enamel matrix is called enamelin
...
C
Correct
...
D
Amelogenin is an unmineralized protein in a young enamel matrix
...
67
OBJ: 2
17
...
b
...
d
...
The first sign of tooth formation is the proliferation of ectodermal cells overlying
specific areas of the oral ectoderm where the homeobox MSX-1 can be localized
...
C
Endoderm forms gastrointestinal tract epithelium and associated glands, not enamel
...
DIF:
Recall REF: p
...
Which is a genetic disorder that makes teeth susceptible to excessive wear?
Essentials Of Oral Histology And Embryology 5thedition Chiego
57
a
...
Cleft palate
c
...
Thyroglossal duct cyst
ANS: C
Feedback
A
Cleft lip is the most common facial malformation, however, it is not associated with
excessive wear of teeth
...
thCwOeMar
...
Dentinogenesis imperfecta is an autosomal dominant genetic disorder of tooth
development, which often makes the teeth susceptible to excessive wear
...
The dentinoenamel junction is much less scalloped and
contributes to the enamel chipping also
...
It appears
as a swelling and is commonly found in the area of the hyoid bone
...
73
OBJ: 2
19
...
Alveolar bone proper
b
...
Haverisan bone
d
...
B
Lamina dura is a thin layer of hard compact bone lining the tooth sockets
...
C
Haversian bone is compact bone containing tubular channels with blood vessels, nerves,
and bone cells surrounded by concentrically located lacunae
...
Interradicular bone forms between the roots of multirooted teeth
...
71
OBJ: 3
Essentials Of Oral Histology And Embryology 5thedition Chiego
20
...
Alveolar bone and cementum
b
...
Cementum and attached gingiva
d
...
As periodontal ligament fibers become embedded in the cementum of the root
surface, the other end attaches to the forming alveolar bone
...
C
The periodontal ligament does not form an attachment between cementum and attached
gingiva
...
DIF: Comprehension
REF: p
...
C M
21
...
Secretion
b
...
Morphogenesis
d
...
B
Maturation is the fourth stage of change
...
Morphogenesis is the first stage, followed by organization and differentiation,
secretion, maturation, and protection
...
DIF:
Recall REF: p
...
Ameloblasts secrete enamel before odontoblasts secrete predentin
...
DIF:
Comprehension
REF: p
...
59 OBJ: 2
DIF:
Comprehension
REF: p
...
68 OBJ: 2
Compact bone is the most highly calcified tissue in the human body
...
REF: p
...
ANS: F
7
...
ANS: T
6
...
ANS: F
5
...
60 OBJ: 2
Precursor odontoblast cells use cell signaling to determine the correct starting position
...
Comprehension
Bone, dentin, cementum, and enamel grow through incremental deposition
...
DIF:
DIF:
CoNmUpRreSheInsNioGn TB
...
REF: p
...
Comprehension
REF: p
...
ANS: F
10
...
71 OBJ: 2
Tooth development relies on an interaction between the ectoderm and mesenchyme
...
DIF:
Comprehension
REF: p
...
ANS: T
DIF:
Comprehension
REF: p
...
Which of the following best defines ankylosis?
a
...
A process that leads to tooth eruption
c
...
The eruption of a tooth into a space occupied by an opposing tooth
ANS: A
A
B
C
D
Feedback
Correct
...
Ankylosis is root fusion, which is associated with a lack of eruption
...
Ankylosis is root fusion, which is associated with a lack of eruption
...
84
OBJ: 1
2
...
The epithelial root sheath proliferates
...
The tooth’s crown tip enters the oral cavity
...
Fibrous tissue surrounding the follicle increases
...
Reduced enamel epitheliuNmUcRoSntIacNtsGaTndBf
...
ANS: A
A
B
C
D
Feedback
Correct
...
The proliferation of the epithelial root sheath initiates root formation
...
The proliferation of the epithelial root sheath initiates root formation
...
76-77
OBJ: 2
3
...
a
...
furcation zone
c
...
incisor liability
ANS: A
A
Feedback
Correct
...
B
The leeway space, not furcation zone, is the mesiodistal size difference between a
primary molar and a permanent premolar
...
D
The leeway space, not incisor liability, is the mesiodistal size difference between a
primary molar and a permanent premolar
...
85-86
OBJ: 2
4
...
Molar
b
...
Canine
d
...
The permanent molar has no primary predecessor
...
The primary canine precedes the permanent canine
...
DIF:
Comprehension
5
...
a
...
c
...
The mixed dentition phase ocNcUurRs SfroImNaGpTprBo
...
76
OBJ: 1
years
Essentials Of Oral Histology And Embryology 5thedition Chiego
63
ANS: C
A
B
C
D
Feedback
The mixed dentition period occurs from 8 to 12, not birth to 2, years of age
...
Correct
...
The mixed dentition period occurs from 8 to 12, not 13 to 18, years of age
...
76
OBJ: 1
6
...
The first phase of tooth eruption, which includes eruptive movements during crown
formation
b
...
The process of initiation of root development into the oral cavity
d
...
DIF:
Feedback
The functional eruption phase is last, not first, and includes occlusal wear of the enamel
...
The functional eruption phase is last and includes occlusal wear of the enamel
...
The preeruptive phase is the phase in which teeth require adjustments relative to the bony
Comprehension
REF: p
...
The permanent teeth that replace the primary teeth are called
a
...
accessional
c
...
successional
ANS: D
...
85-86
OBJ: 2
8
...
a
...
mixed dentition
c
...
functional eruptive
ANS: B
A
B
C
D
Feedback
The preeruptive stage contains primary teeth, not permanent
...
The mixed dentition period contains primary and permanent teeth
...
The functional eruptive stage is a continuous process that ends in tooth loss
...
a
...
c
...
84
OBJ: 1
d
...
Correct
...
Periodontal fibers do not increase the surface area of an osteoclast
...
DIF:
Comprehension
10
...
b
...
Hard tissue resorption comprises which two phases?
Mineral and collagen phases
Prefunctional and functional phases
Extracellular and intracellular phases
REF: pp
...
Fibroblast eruptive and osteoclast functional phases
ANS: C
A
B
C
D
Feedback
Hard tissue resorption is not comprised of the mineral and collagen phases
...
Correct
...
There is no such thing as the fibroblast eruptive phase
...
C M
REF: pp
...
Which of the following is the origin of osteoclasts?
a
...
Monocytes
c
...
Root resorption
ANS: B
A
B
C
D
Feedback
Osteoclasts arise from monocytes, not fibroblasts, of the circular bloodstream
...
Osteoclasts arise from monocytes of the circular bloodstream
...
Root resorption results from the action of osteoclasts that arise from monocytes
...
78-80
12
...
b
...
d
...
Tooth eruption is seen as blanching of the mucosa
...
Tooth eruption is seen as blanching of the mucosa
...
DIF:
Recall REF: pp
...
Special cells destroy collagen fibers by ingestion
...
fibroblast
b
...
osteoblast
d
...
Special fibroblast cells ingest collagen fibers
...
Osteoblast and osteoclast cells remodel the alveolar bone
...
DIF: Comprehension
REF: pp
...
C M
14
...
ruffled border
...
diphyodont
...
pathway
...
leeway space
...
B
Humans are considered diphyodonts because they possess two dentitions, primary and
permanent
...
The dental follicle changes and forms a pathway for the erupting teeth
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
67
The altered tissue area overlying the teeth becomes visible as an inverted triangular area known
as the eruption pathway
...
DIF:
Comprehension
REF: pp
...
Final maturation of the periodontal ligament (PDL) fibers occurs
a
...
b
...
c
...
d
...
ANS: C
Feedback
A
Final maturation of PDL fibers does not occur when the tooth is at the cap stage of tooth
formation
...
C
Correct
...
D
Teeth begin to move occlusally when the root is about half formed
...
81
OBJ: 1
16
...
Periodontal ligament
b
...
Trabeculae
d
...
B
Correct
...
C
Trabeculae describe the appearance of cancellous or spongy bone
...
DIF:
Comprehension
REF: pp
...
Which type of teeth are not successors of primary teeth?
a
...
Adult canines
c
...
Adult molars
ANS: D
A
Feedback
Adult incisors follow primary incisors, so they are considered succedaneous teeth
...
C
Adult premolars follow primary molars, so they are considered succedanous teeth
...
Adult molars do not follow any primary teeth, so they are considered accessional
or nonsuccedaneous teeth
...
78-80
OBJ: 1
18
...
20 in primary; 28 in permanent
b
...
32 in primary; 32 in permanent
d
...
B
Correct
...
C
There are 20 rather than 32 teeth in the primary dentition, and 32 teeth in the permanent
dentition
...
NThGeTtoBta
...
DIF:
Comprehension
REF: p
...
Why are humans considered to be diphyodonts?
a
...
b
...
c
...
d
...
ANS: A
Feedback
A
Correct
...
Teeth in the primary dentition are
smaller and fewer in number than the permanent dentition to conform to the smaller jaws of the
young person
...
C
The reason why humans are diphyodonts is not because the canines are pointed and have
a single cusp
...
DIF:
Comprehension
REF: p
...
The reduced enamel epithelium fuses with the oral epithelium during prefunctional
eruption
...
DIF:
Comprehension
REF: p
...
ANS: T
DIF:
Comprehension
REF: p
...
The prefunctional eruptive phase is characterized by dormancy in the tissues overlying,
surrounding, and underlying the teeth
...
DIF:
Comprehension
REF: p
...
ANS: T
DIF:
Comprehension
REF: p
...
Eruptive movement of posterior teeth occurs occlusally through the bony crypt of the
jaws to
reach the mucosa
...
DIF:
Comprehension
REF: p
...
ANS: T
DIF:
Comprehension
REF: pp
...
Osteoblasts are the active cells in both the formation and degradation of the collagen
fibers
...
REF: p
...
78-80 OBJ: 2
During eruption, the epithelial attachment shifts to the cervical area
...
Comprehension
The eruption process is rapid and continuous
...
DIF:
DIF:
Comprehension
REF: pp
...
ANS: T
DIF:
Recall REF: p
...
Primary and permanent teeth have a similar enamel prism structure, except at the tooth
surface
...
87
OBJ: 1
71
Essentials Of Oral Histology And Embryology 5thedition Chiego
Chapter 07: Enamel
Chiego: Essentials of Oral Histology and Embryology, 5th Edition
MULTIPLE CHOICE
1
...
a
...
enamel rods
c
...
dentinal tubules
ANS: B
A
B
C
D
Feedback
Cementoblasts produce cementoid as they migrate
...
Ameloblasts form enamel rods
...
Odontoblasts produce dentinal tubules as they migrate
...
89
OBJ: 1
2
...
Ridges visible on the surface of enamel
b
...
Alternating dark and light bands of enamel rod groups
d
...
nCt dOeMposition of enamel
ANS: D
A
B
C
D
Feedback
Incremental lines result from rhythmic deposition
...
Incremental lines result from rhythmic deposition, not tubule termination
...
They are not bands
...
Incremental lines result from rhythmic deposition
...
a
...
Which of the following best defines perikymata?
Termination of dentinal tubules in enamel
...
REF: p
...
Growth lines visible as ridges on the surface of enamel
...
Lines that result from the rhythmic recurrent deposition of enamel
...
Perikymata are visible ridges, not bands, on the surface of enamel
...
Perikymata are visible ridges on the surface of enamel
...
DIF:
Comprehension
REF: p
...
Enamel is composed of
a
...
53%
c
...
96%
ANS: D
OBJ: 3
hydroxyapatite
...
Enamel is 96%, not 53%, hydroxyapatite
...
Correct
...
DIF:
Comprehension
5
...
b
...
d
...
5 mm
4
...
89
OBJ: 1
thick at the occlusal or incisal surface
...
89
OBJ: 3
6
...
Gnarled
b
...
Postnatal
d
...
Postnatal, not prenatal, enamel contains minute spaces stained with pigment
...
Postnatal enamel contains minute spaces stained with pigment
...
7
...
Cusp tip
b
...
Middle third of the crown’s lingual aspect
d
...
Perikymata are found at the cervical third of the crown’s facial aspect
...
Correct
...
DIF:
Comprehension
8
...
b
...
94-95
OBJ: 3
74
Essentials Of Oral Histology And Embryology 5thedition Chiego
c
...
Sheath
ANS: B
Feedback
A
The enamel rod core, noNt UtaRil,SisIrNicGh TinBa
...
B
Correct
...
C
The enamel rod core, not head, is rich in apatite and sensitive to demineralization
...
DIF:
Comprehension
REF: p
...
Which of the following best defines the neonatal line?
a
...
b
...
c
...
d
...
ANS: A
A
B
C
D
Feedback
Correct
...
The neonatal line is an accentuated line of Retzius (incremental line)
...
The neonatal line is an accentuated line of Retzius (incremental line)
...
92
OBJ: 2
10
...
Tubular defects are associated with enamel lamellae
...
Lamellae provide increased resistance to dental caries
...
Breathing cold air is a risk factor in developing enamel lamellae
...
Enamel lamellae are microscopic cracks in the surface of enamel
...
Lamellae increase susceptibility to dental caries
...
Cold air (extreme temperatures) may cause enamel lamellae
...
DIF:
Comprehension
11
...
rod
b
...
spindle
d
...
B
C
D
DIF:
REF: p
...
Feedback
Enamel spindles house pNaUrtRoSf aIlNivGinTg Bod
...
Correct
...
Enamel spindles house part of a living odontoblast; enamel lamellae do not
...
92-94
OBJ: 1
12
...
Enamel tufts
b
...
Incremental lines
d
...
Enamel tufts, lamellae, and incremental lines facilitate the spread of dental caries
...
Correct
...
DIF:
Comprehension
REF: p
...
A developmental defect at the dentinoenamel junction of enamel that is filled with
organic material is called (a/an)
a
...
b
...
c
...
d
...
ANS: B
Feedback
A
Enamel is composed of rods that extend from their site of origin, at the dentinoenamel
junction to the enamel outer surface
...
Enamel tufts are located at the dentinoenamel junction and appear at
right angles to it
...
C
Enamel lamellae are cracks in the surface of enamel that are visible to the naked eye
...
D
Enamel spindles arise at the dentinoenamel junction and extend into enamel
...
14
...
DIF: Comprehension
REF: p
...
C M
Two ameloblast cells form the enamel rod
a
...
b
...
c
...
d
...
ANS: B
OBJ: 1
Feedback
A
One ameloblast forms the enamel rod head
...
A part of two ameloblasts form the neck of the enamel rod
...
The three parts of an enamel rod are head, neck,
and tail
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
DIF:
Comprehension
REF: pp
...
The surface of the enamel rod is called the rod
a
...
b
...
c
...
d
...
ANS: C
Feedback
A
The surface is not called the rod margin
...
C
Correct
...
D
The surface of each rod is known as the rod sheath, and the center is the core
...
89-90
OBJ: 1
16
...
hydroxyapatite
...
enamelin
...
gnarled enamel
...
perikymata
...
B
Correct
...
C
Gnarled enamel is composed of enamel rods that are bent in an exaggerated, twisted
manner
...
D
Perikymata are surface manifestations of the incremental lines usually found at
the cervix of the tooth cNroUwRn
...
COM
DIF:
Comprehension
REF: p
...
Ameloblasts migrate away from the dentinoenamel junction as they produce enamel rods
...
REF: p
...
89 OBJ: 1
Light and dark enamel rod groups are known as striae of Retzius
...
Comprehension
Ameloblasts travel along parallel paths to produce straight enamel rods
...
DIF:
DIF:
Comprehension
REF: p
...
ANS: T
DIF:
Comprehension
REF: p
...
Enamel varies in density and hardness
...
REF: p
...
92 OBJ: 2
Enamel rods extend from the dentinoenamel junction to the enamel outer surface
...
Comprehension
Lamellae are cracks in the surface of enamel and are visible to the naked eye
...
DIF:
DIF:
Recall REF: pp
...
ANS: F
DIF:
Comprehension
REF: pp
...
Enamel rods extend perpendicular to the dentoenamel junction, but curve slightly toward
the cusp tip
...
DIF:
Recall REF: p
...
ANS: T
DIF:
CoNmUpRreSheInsNioGn TB
...
89
11
...
ANS: T
12
...
92 OBJ: 1
DIF:
Comprehension
REF: pp
...
95 OBJ: 2
In the Hunter-Schreger phenomenon, adjacent rod groups lie at right angles to each other
...
DIF:
Enamel is an impermeable tissue
...
REF: p
...
ANS: F
14
...
ANS: T
13
...
89-91 OBJ: 1
Etching the surface of enamel stimulates remineralization
...
95
Essentials Of Oral Histology And Embryology 5thedition Chiego
81
Chapter 08: Dentin
Chiego: Essentials of Oral Histology and Embryology, 5th Edition
MULTIPLE CHOICE
1
...
The dentinal matrix that immediately surrounds the dentinal tubule
...
The first dentin formed and deposited at the dentinoenamel junction
...
Dentin directly underlying mantle dentin, comprising the bulk of primary dentin
...
Obliterated tubules, found mainly in areas of attrition, abrasion, fracture, and caries
...
Obliterated tubules are a defining characteristic of sclerotic dentin
...
Correct
...
DIF:
Comprehension
2
...
b
...
dentin of the root
dentin of the crown
REF: p
...
periodontal ligament
d
...
The granular layer of Tomes is a thin layer of dentin underlying the cementum of
the root
...
C
The granular layer of Tomes is a thin layer of dentin underlying the cementum of the
root, not the periodontal ligament
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
DIF:
Comprehension
REF: p
...
Which type of dentin forms to protect and maintain the vitality of the pulp?
a
...
Sclerotic
c
...
Reactionary
ANS: D
A
B
C
D
Feedback
Reactionary, not mantle, dentin is protective to the pulp and restores vitality
...
Reactionary, not, peritubular, dentin is protective to the pulp and restores vitality
...
Reactionary dentin is protective to the pulp and restores vitality
...
108 OBJ: 1
4
...
Granular
b
...
Transparent
d
...
Correct
...
A zone of globular, not transparent, dentin separates mantle and circumpulpal dentin
...
DIF:
Comprehension
NURSINGRTEBF:
...
O98M
OBJ: 1
5
...
Mantle
b
...
Reparative
d
...
Correct
...
Mineralized tubules are associated with sclerotic, not reparative, dentin
...
DIF:
Comprehension
6
...
b
...
d
...
Dead tracts
Neonatal lines
Enamel spindles
Lines of von Ebner
REF: p
...
Enamel spindles, not neonatal lines, are odontoblast extensions in enamel
...
Enamel spindles are odontoblast extensions in enamel
...
DIF:
Comprehension
REF: p
...
Dentin is
than enamel
...
harder
b
...
a whiter shade
d
...
Correct
...
83
Essentials Of Oral Histology And Embryology 5thedition Chiego
C
D
Dentin is a yellowish shade
...
DIF:
Comprehension
REF: p
...
Which is the following is a hNypeRrminIeraGlizeBd
...
Sclerotic dentin
b
...
Intertubular dentin
d
...
Correct
...
Peritubular, not intertubular, dentin is a hypermineralized intratubular dentin
...
DIF:
Comprehension
REF: p
...
The appositional growth of dentin is apparent in which feature?
a
...
Lateral canaliculi
c
...
Interglobular spaces
ANS: A
A
B
C
D
Feedback
Correct
...
Appositional growth is apparent through incremental lines, not lateral canaliculi
...
Appositional growth is apparent through incremental lines, not interglobular spaces
...
a
...
The major organic component of dentin is
water
collagen
REF: pp
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
85
c
...
hydroxyapatite
ANS: B
A
B
C
D
Feedback
Collagen fiber, not water, is the primary organic component of dentin
...
Collagen is the primary organic component of dentin
...
Hydroxyapatite is the main inorganic component of dentin
...
98
OBJ: 1
11
...
COM
a
...
Predentin
c
...
Circumpulpal
ANS: B
Feedback
A
Predentin borders the pulp chamber; globular dentin lies between mantle and
circumpulpal dentin
...
Predentin borders the pulp chamber
...
D
Predentin borders the pulp chamber; circumpulpal dentin lies beneath mantle and
globular dentin
...
98
OBJ: 1
12
...
Mantle dentin
b
...
Secondary dentin
d
...
B
Correct
...
Circumpulpal
dentin is the bulk of dentin
...
It is normal circumpulpal dentin,
however, the primary form is the bulk of dentin
...
DIF:
Comprehension
REF: p
...
Odontoblastic injury during a cavity preparation usually results in which of the following
forms of dentin?
a
...
Primary globular dentin
c
...
Tertiary dentin
ANS: D
Feedback
A
Mantle dentin is a thin lNayerRdepIosiGted Bw
...
B
Globular dentin is a zone Uof dSistuNrbedTdentinO
...
C
Secondary dentin forms as teeth begin function and is normal circumpulpal dentin
...
When caries or mechanical trauma affects the pulp, dentin is deposited
underlying that area and is termed reactionary/response, reparative, or tertiary dentin
...
98
OBJ: 1
14
...
Reactionary dentin
b
...
Reparative dentin
d
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
B
87
Reactionary/response dentin should be used when original odontoblasts function
in deposition
...
D
Secondary dentin is all the dentin formed after a tooth is in function and is differentiated
from tertiary dentin which is formed in response to pulpal stimulation
...
101 OBJ: 1
15
...
interglobular spaces
...
lamellae
...
The presence of ameloblasts
...
sclerotic dentin
...
Globular dentin contains hypomineralized areas between the globules, termed
interglobular spaces
...
C
Ameloblasts form enamel and are not associated with the formation of dentin
...
DIF: Comprehension
REF: p
...
C M
16
...
lines of von Ebner
...
the smear layer
...
the granular layer of Tomes
...
canaliculi
...
All dentin is deposited incrementally
...
Lines formed over several days
are believed to be the ones described by von Ebner
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
C
The granular layer of Tomes is observed when a thin, calcified section of tooth root is
studied under transmitted light
...
DIF:
Comprehension
REF: p
...
Sclerotic dentin is found in each of the following areas EXCEPT one
...
Abrasion
b
...
Living odontoblasts
d
...
B
Sclerotic dentin is found in areas of fracture
...
Sclerotic dentin is not formed by odontoblasts but is a sequela due to the death
of odontoblasts
...
DIF:
Comprehension
REF: p
...
Peritubular dentin is not found in the dentinal tubules of interglobular dentin
...
DIF:
Comprehension
REF: p
...
ANS: F
DIF:
Comprehension
REF: p
...
Mantle dentin contains larger collagen fibers than circumpulpal dentin
...
98 OBJ: 1
4
...
ANS: F
5
...
106 OBJ: 3
DIF:
Comprehension
REF: p
...
101 OBJ: 1
DIF:
Comprehension
REF: pp
...
101 OBJ: 1
Dentin is responsive to the environment
...
DIF:
Secondary dentin is deposited more quickly than primary dentin
...
REF: pp
...
ANS: F
10
...
ANS: F
9
...
ANS: F
8
...
106 OBJ: 2
The junction between dentin and enamel is scalloped
...
Comprehension
Odontoblasts have a singular process when they first differentiate
...
DIF:
DIF:
Comprehension
REF: p
...
ANS: T
DIF:
Comprehension
REF: p
...
Dentinal tubules contain odoNntUobRlaSstIpNroGcTesBse
...
ANS: T
DIF: Comprehension
REF: p
...
Which of the following is not found in the central part of the pulp?
a
...
Cementoblasts
c
...
Veins and arteries
ANS: B
Feedback
A
Fibroblasts, collagen fibers, veins, and arteries are all found in the central region of the
pulp; cementoblasts are not
...
Cementoblasts are not located in the central region of the pulp
...
D
Fibroblasts, collagen fibers, veins, and arteries are all found in the central region of the
pulp; cementoblasts are not
...
113 OBJ: 1
2
...
Transduction
b
...
Pain transmission
d
...
B
Correct
...
91
Essentials Of Oral Histology And Embryology 5thedition Chiego
92
C
The hydrodynamic, not transmission theory, is defined by odontoblastic movement into
pulpal and intratubular nerve endings
...
DIF:
Comprehension
REF: p
...
a
...
c
...
Which of the following best defines the zone of Weil?
Cell-free region
High cell density
Concentrated plexus of nerves
Large veins, arteries, and pericytes
Feedback
A
Correct
...
B
The zone of Weil is characterized as a cell-free, not cell-rich, region
...
D
The zone of Weil is characterized as a cell-free, not vascular, region
...
113 OBJ: 1
4
...
Pulp horns
b
...
Apical foramen
d
...
Most pulpal nerve endings terminate in the odontogenic region of the pulp horns
...
Most pulpal nerve endings terminate in the odontogenic region of the pulp horns
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
DIF:
93
Comprehension
NURSINGRTEBF:
...
O12M2
OBJ: 1
5
...
Fibroblasts
b
...
Erythroblast
d
...
Fibroblasts are the preponderant cell in the cell-rich zone
...
Fibroblasts, not erythroblasts, are the preponderant cell in the cell-rich zone
...
DIF:
Comprehension
6
...
b
...
d
...
111 OBJ: 1
ANS: A
A
B
C
D
Feedback
Correct
...
Type I (not II) collagen is produced by odontoblasts
...
Type I (not IV) collagen is produced by odontoblasts
...
a
...
c
...
117-119
OBJ: 1
formation
...
foramen
ANS: B
A
B
C
D
Feedback
Hindered dentin formation produces accessory canals
...
Hindered dentin formation produces accessory canals
...
Hindered dentin formation produces accessory canals
...
113 OBJ: 2
8
...
C M
a
...
decrease
c
...
stay the same
ANS: B
A
B
C
D
Feedback
In general, pulpal cells decrease, not increase, with age or trauma
...
Pulpal cells decrease with age or trauma
...
In general, pulpal cells decrease with age or trauma
...
125 OBJ: 3
9
...
Dental pulp located in the roots of teeth
...
Pulp with a soft, gelatinous consistency
...
The opening of root pulp into the periodontium
...
Dental pulp that occupies the crown of the tooth
...
Radicular pulp is located in the roots of teeth
...
Radicular pulp is defined by its location in the roots of teeth
...
94
Essentials Of Oral Histology And Embryology 5thedition Chiego
DIF:
Comprehension
REF: pp
...
Inflammation of the pulp may spread to the _
...
dentin
b
...
predentin
d
...
Inflammation can spread from the pulp to the periodontium, not enamel
...
Correct
...
DIF:
Comprehension
11
...
Pulpal capillaries are lined with
epithelial cells
REF: p
...
b
...
myelinated axons
d
...
Capillaries are lined with endothelial cells
...
Capillaries are lined with endothelial cells, not nonmyelinated axons
...
a
...
c
...
117 OBJ: 2
teeth
...
mandibular
ANS: C
A
Feedback
The apical foramen is slightly larger in maxillary, not anterior, teeth
...
Correct
...
The apical foramen is slightly larger in maxillary, not mandibular, teeth
...
113 OBJ: 1
13
...
arterioles
...
terminal arterioles
...
precapillaries
...
capillaries
...
The diameter of the arterioles in the dental pulp varies from 50 to 100 µm, which
equals the size of arterioles in other areas of the body
...
C
Precapillaries measuring 8 to 12 µm are present in the peripheral pulp
...
DIF:
Comprehension
14
...
b
...
cuboidal
...
palisaded
...
stratified
...
120-121
OBJ: 2
Essentials Of Oral Histology And Embryology 5thedition Chiego
97
Feedback
A
Root pulp odontoblasts are short and cuboidal in the middle area of the pulp
...
C
Correct
...
D
Odontoblasts in the area of the pulp horns appear to be stratified, however, they are
pseudostratified, meaning all cells touch predentin
...
113 OBJ: 1
15
...
nucleus
...
Golgi apparatus
...
process
...
mitochondria
...
B
An active odontoblast has a Golgi apparatus in its apical part
...
The process could be several millimeters long in the crown of the
tooth, but it is shorter in the root
...
DIF:
Comprehension
REF: p
...
The largest blood vessels associated with odontoblasts are under control by neurons of
the
a
...
b
...
c
...
d
...
ANS: D
Feedback
Essentials Of Oral Histology And Embryology 5thedition Chiego
98
A
The largest blood vessels are not under control by the preganglionic parasympathetic
autonomic nervous system
...
C
The largest blood vessels are under postganglionic rather than preganglionic
sympathetic nervous sysNteUmRcSoIntNroGl
...
COM
D
Correct
...
Several theories exist
concerning pain conduction through dentin
...
DIF:
Comprehension
REF: p
...
Most denticles are
a
...
b
...
c
...
d
...
ANS: D
Feedback
A
Most denticles are not true pulp stones, and they are not most commonly embedded
within dentin
...
C
Most denticles are false pulp stones, however, they are not most commonly embedded in
dentin
...
Most denticles are false pulp stones that are free in the pulp
...
True denticles have dentinal
tubules like dentin
...
126 OBJ: 3
18
...
Inductive
b
...
Protective
d
...
B
Pulp organs are formative because odontoblasts of the pulp form dentin that surrounds
and protects the pulp
...
Pulp is protective in its response to stimuli, such as heat, cold, pressure, and
operative cutting procedures
...
D
Pulp is nutritive, because it carries oxygen and nutrition to the developing and
functioning tooth
...
124 OBJ: 2
19
...
20
b
...
52
d
...
Correct
...
There are 52 pulps total in the primary and permanent dentition
...
DIF:
Recall REF: p
...
Odontoblasts are the second most prevalent type of cell found in the pulp
...
DIF:
Recall REF: p
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
ANS: T
DIF:
Comprehension
100
REF: p
...
Pulp stones are ectopic calcifications produced by microtrauma
...
Comprehension
REF: p
...
ANS: T
5
...
111 OBJ: 1
Coronal pulp is much smaller than root pulp
...
111 OBJ: 1
6
...
ANS: F
7
...
113-117 OBJ: 1
Pulpal fibrosis is associated more with aging than injury
...
124 OBJ: 3
8
...
hiCpObMetween cells
...
113-117 OBJ: 1
9
...
ANS: T
10
...
123-124 OBJ: 1
Dental pulp is not responsive to temperature change
...
123-124 OBJ: 1
11
...
ANS: T
DIF:
Comprehension
REF: p
...
Pulp stones only occur in erupted teeth
...
126
OBJ: 3
13
...
ANS: F
14
...
112-113 OBJ: 1
Compared with radicular pulp, coronal pulp is smaller and contains fewer elements
...
111 OBJ: 1
101
Essentials Of Oral Histology And Embryology 5thedition Chiego
Chapter 10: Cementum
Chiego: Essentials of Oral Histology and Embryology, 5th Edition
MULTIPLE CHOICE
1
...
Cementum meets the enamel
...
Cementum forms on the enamel
...
Enamel forms over the cementum
...
A gap occurs between the cementum and enamel
...
Correct
...
Enamel never forms over cementum
...
DIF:
Comprehension
REF: p
...
Which percentage of collagen is found in organic cementum?
a
...
30% to 35%
c
...
50% to 55%
ANS: D
TEST BANK
A
B
C
D
Feedback
There is 50% to 55% collagen in organic cementum
...
There is 50% to 55% collagen in organic cementum
...
There is 50% to 55% collagen in organic cementum
...
137 OBJ: 2
102
Essentials Of Oral Histology And Embryology 5thedition Chiego
103
3
...
An ovoid calcification in the periodontal ligament (PDL)
b
...
A flattened and elongated cell found in the coronal portions of the pulp
d
...
A cementicle is a round or ovoid calcification in the PDL
...
C
D
Cementicles are round calcified nodules located in the PDL, not the pulp
...
DIF:
Comprehension
REF: p
...
Cementocytes found deep in the cementum have
surface of the cementum
...
more
b
...
larger
d
...
Correct
...
Cementocytes found deeper in the cementum have fewer, not larger, organelles
...
DIF:
Comprehension
REF: p
...
Incremental lines in cementum indicate
a
...
rhythmic deposition
c
...
C M
d
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
A
B
C
D
Feedback
Incremental lines in cementum indicate rhythmic deposition, not trauma
...
Cementum is deposited in increments, resulting in visible lines
...
Incremental lines in cementum are not indicators of odontocytes
...
132 OBJ: 1
6
...
In fact, cementum is more resistant
to resorption than bone
...
Both statements are true
...
Both statements are false
...
The first statement is true; the second is false
...
The first statement is false; the second is true
...
B
The second statement is true; cementum is more resistant to resorption than bone
...
D
Correct
...
Cementum
is more resistant to resorption than bone
...
134-136
7
...
enamel
b
...
granular layer of Tomes
d
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
TEST BANK
DIF: Comprehension
REF: pp
...
The intermediate layer of cementum is
a
...
10 mm
c
...
10 nm
ANS: C
105
OBJ: 2
thick
...
The intermediate layer of cementum is 10 µm, not 10 mm, thick
...
The intermediate layer of cementum is 10 µm thick
...
DIF:
Recall REF: pp
...
a
...
c
...
At which of the following the cementum is thickest?
Apex of the root
Cementoenamel junction
Cervical region of the root
Furcation of multirooted teeth
OBJ: 2
ANS: A
Feedback
A
Correct
...
B
Cementum is always more substantial at the root apex than at the cementoenamel
junction
...
D
Cementum is always more substantial at the root apex than at the furcation
...
134-136
OBJ: 1
Essentials Of Oral Histology And Embryology 5thedition Chiego
10
...
a
...
cementicles
c
...
collagen fibers
ANS: C
A
B
C
D
Feedback
Cementocytes, not lacunae, have long processes that lie in the canaliculi
...
Correct
...
Cementocytes, not collagen fibers, have long processes that lie in the canaliculi
...
CppO
...
Why is cementum insensitive to pain?
a
...
b
...
c
...
d
...
ANS: D
A
B
C
D
Feedback
Cementum is insensitive because it contains no nerve innervation
...
Cementum is insensitive because it contains no nerve innervation
...
Cementum is insensitive because it contains no nerve innervation
...
a
...
c
...
Which of the following is formed by cementoblasts and maintained by cementocytes?
Extrinsic fiber bundles
Intrinsic fibers of cementum
Calcified ligament fiber bundles
Principal fibers of the periodontal ligament
...
132-133
OBJ: 2
106
Essentials Of Oral Histology And Embryology 5thedition Chiego
107
ANS: B
A
B
C
D
Feedback
Intrinsic fibers are formed by cementoblasts and maintained by cementocytes
...
Intrinsic fibers are formed by cementoblasts and maintained by cementocytes
...
Intrinsic fibers are formed by cementoblasts and maintained by cementocytes
...
134 OBJ: 2
13
...
Extrinsic wear and occlusal force
...
Calcification of ligament fiber bundles
...
Obstruction of the pattern of incremental lines
...
Cementoblasts cannot repair cementum after resorption
...
B
Correct
...
C
Calcified ligament fiber bundles are responsible for the rough surface of aging
cementum
...
TEST BANK
DIF:
Comprehension
REF: p
...
Which of the following best defines the term ankylosis?
a
...
b
...
c
...
d
...
ANS: A
A
B
C
Feedback
Correct
...
Ankylosis occurs when alveolar bone fuses with cementum
...
Essentials Of Oral Histology And Embryology 5thedition Chiego
D
Ankylosis occurs when alveolar bone fuses with cementum
...
138 OBJ: 2
15
...
Cementoid layer
b
...
Celluluar cementum
d
...
B
Correct
...
It is deposited by the
inner layer of the epithelial cells of the root sheath
...
C
Cementum is deposited directly on the surface of the intermediate cementum at a
thickness of about 30 to 60 µm at the cervical region of the crown
...
D
Cementum is deposited directly on the surface of the intermediate cementum at a
thickness of about 30 to 60 µm at the cervical region of the crown
...
DIF:
Comprehension
16
...
b
...
periodontal ligament space
...
occlusion
...
pulp horns
...
134 OBJ: 1
Essentials Of Oral Histology And Embryology 5thedition Chiego
109
Feedback
Correct
...
B
Usually the alveolar bone compensates for an increase in the amount of cementum and
the periodontal ligament space is maintained
...
As the tooth ages, occlusal height is reduced
...
D
It will not obstruct the pulp horns
...
DIF:
Comprehension
REF: p
...
a
...
c
...
The area where cemental resorption stops and deposition begins is called a
cementicle
...
cementoblast
...
ANS: B
Feedback
A
A cementicle is a calcified ovoid or round nodule found in the periodontal ligament
...
A reversal line is seen where resorption stops and deposition begins
...
Repair cementum may be deposited by cementoblasts in the
defect
...
D
Cementocytes are cementoblasts that have become incorporated into cementum
...
138 OBJ: 3
18
...
odontoblasts
...
ameloblasts
...
cementoblasts
...
cementocytes
...
B
Ameloblasts form enamel, not cementum
...
Cemental repair is a protective function of cementoblasts after
resorption of root dentinNor RcemIentGum
...
C M
D
Cementocytes are a compUoneSnt oNf ceTllular ceOmentum
...
DIF:
Comprehension
REF: p
...
Which of the following is found in both bone and cementum?
a
...
Nerves
c
...
Haversian or Volkmann canals
ANS: C
Feedback
A
Cementum does not contain blood vessels
...
C
Correct
...
D
Cementum does not contain Haversian or Volkmann canals
...
134 OBJ: 2
20
...
0%
b
...
30%
d
...
B
In 10% of the cases a small gap exists between cementum and enamel
...
C
Correct
...
D
In 60% of the cases cementum is formed on the cervical enamel for a short distance
...
134 OBJ: 1
21
...
Overlap, meet, and gap
b
...
Obstructive meeting group
d
...
Overlap (60%), meet (30%), and gap (10%)
...
OMG does not mean obstructive meeting group
...
DIF:
Comprehension
REF: p
...
Young children frequently develop free cementicles
...
Comprehension
REF: p
...
ANS: F
3
...
132-133 OBJ: 2
Intermediate cementum overlies dentin
...
134
OBJ: 2
4
...
ANS: F
5
...
132 OBJ: 2
Intermediate cementum is softer than dentin
...
134 OBJ: 2
111
Essentials Of Oral Histology And Embryology 5thedition Chiego
112
6
...
ANS: T
7
...
134 OBJ: 2
The initial layer of cementum contains an enamelin-like protein
...
DIF:
DIF:
Comprehension
REF: p
...
ANS: F
DIF: Comprehension
REF: p
...
The majority of cementocyteNs UreRsidSeIwNitGhiTnBth
...
ANS: T
DIF: Comprehension
REF: p
...
Cementum is devoid of elastic fibers
...
Comprehension
REF: p
...
ANS: F
12
...
136 OBJ: 2
Cementum resorption is a characteristic of aging cementum
...
136 OBJ: 3
Title: ESSENTIALS OF ORAL HISTOLOGY AND EMBRYOLOGY 5THEDITION CHIEGO TEST BANK QUESTIONS AND ANSWERS
Description: ESSENTIALS OF ORAL HISTOLOGY AND EMBRYOLOGY 5THEDITION CHIEGO TEST BANK QUESTIONS AND ANSWERS
Description: ESSENTIALS OF ORAL HISTOLOGY AND EMBRYOLOGY 5THEDITION CHIEGO TEST BANK QUESTIONS AND ANSWERS