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Science for Medicine Taz > Tissues > Flashcards

Tissues Flashcards

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Biology 101 flashcards
1
Q

what is epithelial tissue?

A

It is tissue that covers surfaces and separates compartments

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2
Q

what are the four types of tissue that make up the entire body?

A

epithelial , connective, muscle and nerve

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3
Q

describe epithelial tissue

A

no contract inhibition

forms cell - cell / cell - ECM junctions to fill gaps

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4
Q

what do desmosomes do?

A

provide a strong bond between adjacent epithelial cells

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5
Q

what do hemidesmosomes do?

A

attach epithelial cell to basement membrane

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6
Q

what does cilia do?

A

Provides a mechanism for movement of material over the surface of epithelia

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7
Q

what do tight/occluding junctions do?

A

Seals intracellular space.

Maintains integrity of epithelial layer

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8
Q

what do gap junctions allow?

A

Cell - cell communication

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9
Q

what does microvilli do?

A

Increase surface area.

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10
Q

what is the basement membrane made off?

A

basal lamina

reticular lamina

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11
Q

what is simple epithelia ?

A

one layer of epithelial cells - can be different types tho

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12
Q

What does a squamous cell look like

A

bit like a smooth muscle cell - long n thin

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13
Q

what is stratishpied epithelia?

A

multiple layers of epithelial tissue

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14
Q

Where and simple squamous cells found?

A

Alveoli and capillaries - thin to allow for easy diffusion

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15
Q

where is simple cuboidal epithelia found?

A

lining of nephrons - performs secretion and absorption / pumping

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16
Q

Where is simple columnar epithelia found?

A

lines the digestive tract. Can be ciliated to move mucus

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17
Q

where is stratified squamous epithelia found?

A

epidermis - thick - layers broken off for new growth

18
Q

where is stratisphied cuboidal epithelial found?

A

Ducts of sweat glands - production

19
Q

where is stratisphied columnar epithelia found?

A

pharynx - protection and secretion

20
Q

what is psuedostratisfied columnar epithelia?

A

all same layer but slightly overlapping - found in the trachea

21
Q

Describe the epithelial compartments of the liver.

A

Hepatocytes arranged int rows between blood vessels .
Do secretion and other shit
Support epithelial cells line blood vessels and bile ducts

22
Q

describe the epithelial compartments of the kidneys

A

epithelial cells arranged into nephrons
filter blood and absorb filtrate etc.
support cells line blood vessels and renal pelvis which receives toxic urine

23
Q

what are some consequences of abnormal function of covering and lining or epithelia ?

A

under/over proliferation
over / under secretion
loss of ciliary beat

24
Q

what is a gland?

A

a collection of multi or single cellular secretory epithelial cells

25
Q

what does the endocrine gland do?

A

secretes into blood . eg. adrenal cortex

26
Q

what does an exocrine gland do?

A

secrete to surface -e.g sweat gland

27
Q

what is a circular simple gland called?

A

acinar

28
Q

what is a simple long gland called ?

A

tubular

29
Q

what is a compound gland called?

A

tubuloacinar gland

30
Q

what are the consequences of abnormal glandular function?

A

over production - pituarity giantism

under production - pituitary dwarfism

31
Q

name 2 fibre connective tissues

A

collagen

elastic fibres

32
Q

give some description of collagen

A

30% of body weight

flexible but inelastic with great tensile strength

33
Q

given some description of elastic fibres

A

protein elastin - can strength to 1.5x its original length and returns to it’s original shape. Yellow, found in sheets/ Microfibrils and amorphous content

34
Q

name 3 ground substance connective tissue

A

proteoglycans
hyaluronic acid
glycoproteins

35
Q

is tissue fluid epithelial tissue or connective tissue?

A

connectivee

36
Q

describe loose connective tissue

A

fixed cells - fibroblasts, macrophages, adipocytes, mast cells

transient cells - white blood cells

37
Q

what happens if the blood/bone marrow has abnormal function ?

A

leukemia

38
Q

what happens if loose/dense connective tissue has abnormal function?

A

loss/abnormal fibres

39
Q

what happens if cartilage connective tissue has an abnormal function?

A

tear

40
Q

what happens if bone has an abnormal function?

A

osteoporosis

Science for Medicine Taz (14 decks)

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