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Title: Introduction to human tissues
Description: Basic human tissues study notes used for first year bachelor of Biomedical science at Queensland University of Technology. Basic foundation for anyone studying or wanting to study biology, anatomy or medicine at university.
Description: Basic human tissues study notes used for first year bachelor of Biomedical science at Queensland University of Technology. Basic foundation for anyone studying or wanting to study biology, anatomy or medicine at university.
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Tissues
Epithelial
Simple (single layer) or Stratified (multiple layers)
Squamous (flattened) or cuboidal or columnar
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Simple squamous epithelium (alveoli of lungs – allows gas diffusion) (large nuclei)
Simple cuboidal epithelium (kidney tubules – urine formation)
Simple columnar epithelium (inner lining of sml intestine – nutrient absorption) (nuclei in basal
region)
Psudostratified columnar epithelium (respiratory – ciliated) (rest on the basement membrane)
Stratified squamous epithelium (specialized transitional)
o Keratinised (hair, skin, nails)
o Non Keratinised (oesophagus, mouth & pharynx, vagina and anal canal)
Stratified cuboidal epithelium
Stratified columnar epithelium
Surface epithelia
Glandular epithelia
Function = Secretion or excretion
Exocrine = passes secretion into a duct which carries to the bodies surface
Endocrine = no ducts and passes secretion directly into blood capillaries and/or lymphatic capillaries
CT
General: Areolar connective tissue (loose)
Adipose connective tissue (loose)
Reticular connective tissue (loose)
Dense regular connective tissue (tendons and aponeuroses)
- Collagenous fibres: densely packed parallel bundles
- Fibroblasts: elongated flattened nuclei of inactive fibroblasts wedged between bundles of
collagenous fibres
Dense irregular connective tissue (dermis of skin, fibrous capsules of organs, periosteum, endosteum,
perichondrium and deep fascia)
- Elastic fibres: stain black; thinner near the epithelium
- Collagenous fibres: pink stained fibres; densely packed bundles oriented in all directions
Specialised: Bone tissue
Cartilaginous tissue
Blood and haemopoietic tissue
Lymphatic tissue
Intercellular substances
Collagenous fibres:
White appearance
Occur in bundles
Strong, flexible and resistant to stretching
Do not branch
Reticular Fibres:
Thin and branched (net-like supporting framework of organs)
Around sml blood vessels, muscle fibres, nerve fibres and adipocytes
Elastic fibres:
Branched and rejoin freely, thin
In skin, lung, urinary bladder, and most arteries
Amorphous ground substance:
Complex of carbohydrates and proteins secreted by fibroblasts
General tissue: Areolar connective tissue (loose)
Adipose connective tissue (loose)
Reticular connective tissue (loose)
Dense regular connective tissue (tendons and aponeuroses)
- Collagenous fibres: densely packed parallel bundles
- Fibroblasts: elongated flattened nuclei of inactive fibroblasts wedged between bundles of
collagenous fibres
Dense irregular connective tissue (dermis of skin, fibrous capsules of organs, periosteum, endosteum,
perichondrium and deep fascia)
- Elastic fibres: stain black; thinner near the epithelium
- Collagenous fibres: pink stained fibres; densely packed bundles oriented in all directions
Title: Introduction to human tissues
Description: Basic human tissues study notes used for first year bachelor of Biomedical science at Queensland University of Technology. Basic foundation for anyone studying or wanting to study biology, anatomy or medicine at university.
Description: Basic human tissues study notes used for first year bachelor of Biomedical science at Queensland University of Technology. Basic foundation for anyone studying or wanting to study biology, anatomy or medicine at university.