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Title: Integumentary System
Description: This is 26 slides compiled slides explaining integumentary system along with all layers of skin.
Description: This is 26 slides compiled slides explaining integumentary system along with all layers of skin.
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Integumentary
System
Learning objectives
integumentary system
anatomy of layers of skin
structure of hair
sebaceous glands and sudoriferous glands
Integumentary system
The integumentary system consists of the
skin and its accessory structures, including
the hair, nails, sebaceous glands, and sweat
glands
...
It weighs more than 6 pounds in the average
adult, and covers more than 3,000 square
inches
...
It is
supplied with blood vessels and nerves
...
It contains millions of nerve endings that
act as, heat, cold, and pressure
...
The skin has two layers… the
Epidermis… epidermis and the dermis
...
It is mostly dead cells,
filled with a protein
substance called keratin
...
Epidermis…
Stratum lucidum
The stratum lucidum
(LOO seh dum) is a
translucent layer lying
directly beneath the
corneum
...
Cells in
this layer are also
dead or are in the
process of dying
...
They
are in the process of
keratinization…
stratum germinativum
The stratum germinativum (jer mah nah
TĪV um) is composed of several layers of
living cells capable of cell division
...
• The more abundant the melanin… the
darker the skin color
...
It contains the lymphatics, nerves, nerve
endings, blood vessels, sebaceous and
sweat glands, elastic fibers, and hair
follicles
...
the papillary layer
is arranged into microscopic
structures that form ridges
...
The reticular layer is
beneath the papillary
layer; it is a white
fibrous tissue that
supports the blood
vessels
Hypodermis
The subcutaneous tissue or hypodermis is
composed of adipose and connective
tissue
...
The dermis is connected to underlying
tissue by the subcutaneous tissue
...
Each hair has a shaft that
is visible and a root that is
embedded in the follicle
...
The cortex provides most of the hair’s
weight
...
Sebaceous glands
Sebaceous (sǐ BAY shuss) glands are oil
glands
...
Each sebaceous gland secretes sebum,
which lubricates the hair and skin
...
Nails…
Fingernails and toenails
are hard keratin
structures that protect
the ends of the fingers
and toes
...
About 2 million are distributed over the
surface of the body, more numerous on
the palms of the hands, soles of the feet,
forehead, and axillae or underarms
...
As sweat collects on the skin
surface, it evaporates and creates a
cooling effect
...
The average person loses approximately
½ liter of fluid through sweating each day
...
Learning Outcomes
Students able to understand:
Understand the integumentary system
Understand the anatomy of layers of
skin
Understand the structure of hair
Understand the sebaceous glands and
sudoriferous glands
References
Ross & Wilson Anatomy and
Physiology in Health and
Illness 13th Edition
by Anne Waugh MSc CertEd SRN RNT
FHEAby Anne Waugh MSc CertEd SRN
RNT FHEA (Author), Allison Grant BSc
PhD RGN (Author)
Title: Integumentary System
Description: This is 26 slides compiled slides explaining integumentary system along with all layers of skin.
Description: This is 26 slides compiled slides explaining integumentary system along with all layers of skin.