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Tissues Of The Body > Lecture 2 > Flashcards

Lecture 2 Flashcards

0
Q

Explain the position, structure and function of the basement membrane

A

Thin, flexible, acellular layer between epithelia and subtending connective tissue.
Serves to adhere epithelial cells to tissues, and as a cellular filter.

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1
Q

Define epithelia

A

Sheets of contiguous cells, of varied embryonic origin, that cover the external surface of the body and line internal surfaces.

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2
Q

What is the function of simple squamous and give examples

A 
Gas exchange (alveoli)
Lubrication (peritoneum, pericardium, pleura)
Pinocytosis (endothelium, mesothelium)
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3
Q

What is the function of simple cuboidal. Give examples.

A

Absorption (exocrine glands, kidney tubules)
Barrier (ovaries)
Hormone synthesis, storage and mobilisation (thyroid)

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4
Q

What is the function of simple columnar and give examples.

A

Absorption (small intestines)
Secretion (stomach lining, small intestine)
Lubrication (small intestine)
Transport (oviduct)

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5
Q

What is the function of pseudostratified. Give examples.

A

Secretion and conduit (vas deferens, respiratory tract)
Absorption (epididymis)
Mucus secretion (respiratory tract)
Particle trapping and removal (respiratory tract)

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6
Q

What is the function of non keratinized stratified squamous. Give examples.

A

Protection against abrasion and reduced water loss (buccal cavity, oesophagus, vagina, anal canal, eyelid, cornea)

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7
Q

What is the function of keratinized stratified squamous. Give examples.

A

Protection against abrasion, prevents ingress of microbes and protection from UV (Skin surface, parts of buccal cavity)

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8
Q

What is the function of transitional epithelium, give examples.

A

Distensibility, protection of underlying tissue from toxic chemicals (ureters, renal calyces, bladder)

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9
Q

Explain the difference in renewal rates of epithelium

A

Depend son location and function of cells. Accelerated by injury. E.g. Skin 28 days, small intestine 4 days

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Tissues Of The Body (2 decks)

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