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BMS 300 > Cell junctions and tissues > Flashcards

Cell junctions and tissues Flashcards

1
Q

what are the 3 types of cell junctions

A

anchoring, gap, tight

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2
Q

what do tight junctions contain

A

claudins (cats have tight claws)

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3
Q

what do gap junctions contain

A

connexions (gap in the cone)

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4
Q

what are the 4 types of anchoring junctions

A

adherens, desmosomes, hemidesmosomes, focal adhesions

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5
Q

what type of anchoring junctions are cadherins

A

adherens and desmosomes

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6
Q

what type of anchoring junctions are integrins

A

hemidesmosomes and focal adhesions (has an i in it)

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7
Q

what type of junction is integrins and cadherins

A

anchoring

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8
Q

what type of anchoring junctions is actin responsible for

A

adherens and focal adhesions (actin - starts with a)

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9
Q

what type of anchoring junctions is intermediate filaments responsible for

A

desmosomes and hemidesmosomes (SOME words are just long)

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10
Q

what are cadherins dependent on

A

calcium

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11
Q

what is cell to cell communication called

A

gap junctions

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12
Q

what is a singular connexon called

A

connexin (i looks like a 1)

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13
Q

what cell junction connects the cytoplasm

A

gap junctions

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14
Q

how do connexons differ

A

in permeability

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15
Q

what cell junctions hold cells together and are leak proof

A

tight junctions

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16
Q

what cell junctions fuse adjacent membranes

A

tight junctions

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17
Q

what are the main transmembrane proteins

A

claudins

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18
Q

what happens when the claudins let bad stuff in

A

tumorigenesis

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19
Q

how do claudins let bad stuff in

A

impaired barrier function

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20
Q

what recovers claudins

A

probiotics

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21
Q

what cell junctions adheres cells to other cells

A

anchoring junctions

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22
Q

what do anchoring junctions provide

A

strong membrane

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23
Q

where do anchoring junctions lie

A

below tight junctions

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24
Q

what are the functions of junctions

A

attachment, separation, communication, cell polarity

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25
Q

where is simple squamous tissue found

A

blood vessels and body cavities (blood and open cavities make me sqeamous)

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26
Q

where is simple cuboidal tissue found

A

glandular tissue (boi my glands are acting up)

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27
Q

where is simple columnar tissue found

A

stomach and intestines (poop piles up in columns)

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28
Q

where is stratified squamous tissue found

A

epidermis (thick and flat tissue)

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29
Q

where is stratified cuboidal tissue found

A

ducts and glands

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30
Q

where is psuedostratified tissue found

A

upper respiratory

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31
Q

what is transitional tissue found

A

urinary tract

32
Q

what are the 3 types of connective tissue

A

proper, supportive, fluid

33
Q

what are the 2 types of CT proper

A

loose and dense

34
Q

what are the 3 types of loose CT

A

areolar (nipples are loose), adipose (loose fat jiggle), and reticular (rectangles are loose squares)

35
Q

what are the 3 types of dense CT

A

regular, irregular, elastic

36
Q

what are the 2 types of supportive CT

A

cartilage and bones

37
Q

what are the 3 types of cartilage

A

hyaline, fibrocartilage, and elastic

38
Q

what are the 2 types of bone

A

compact and spongy

39
Q

where is areolar CT found

A

under epithelial

40
Q

what is the function of collagen fibers in CT

A

holds CT together

41
Q

what is the function of elastic fibers in CT

A

return back to normal after stretching

42
Q

what are mesenchymal cells

A

adult stem cells

43
Q

what do mesenchymal cells differentiate for

A

repair

44
Q

what do fibroblasts secrete to form matrix

A

polysaccharides and proteins

45
Q

what do macrophages release

A

cytokines

46
Q

what does the release of cytokines by macrophages cause

A

recruitment of more immune cells

47
Q

what is the function of mast cells

A

kill pathogens

48
Q

what is the function of microphages

A

attacks pathogens

49
Q

what do lymphocytes develop into

A

antibody producing plasma cells

50
Q

what are the characteristics of ground substance

A

clear, viscous matrix

51
Q

what is the function of ground substance

A

absorbs shock

52
Q

what is ground substance made of

A

proteoglycans

53
Q

what do proteoglycans do

A

trap water

54
Q

what are glycosaminoglycans made of

A

sugar

55
Q

what is the charge of glycosaminoglycans

A

negative

56
Q

where are proteoglycans assembled and how do they leave

A

assembled in the cell and leave via exocytosis

57
Q

what are the two things that make up proteoglycans

A

polypeptide and monosaccharides

58
Q

where does the elongation of glycosaminoglycans occur

A

trans golgi

59
Q

what is the yellow part of adipose tissue called

A

carotene

60
Q

what do capillaries store in adipose tissue

A

calories as fat

61
Q

what is reticular tissue

A

mesh-like framework for organs

62
Q

what is the purpose of dense CT

A

strength and resistance

63
Q

what CT are ligaments and tendons made of

A

dense regular CT

64
Q

what is the difference between dense irregular and dense regular

A

regular is parallel and irregular is random

65
Q

what CT is the dermis made of

A

dense irregular CT

66
Q

where are chondrocytes in cartilage found

A

lacunae

67
Q

describe the collagen in hyaline cartilage

A

dispersed

68
Q

what does hyaline cartilage do for joints

A

makes them moveable

69
Q

describe the collagen in fibroelastic cartilage

A

thick bundles

70
Q

what does the thick bundles of cartilage in fibroelastic cartilage cause

A

causes fibroelastic cartilage to be tough

71
Q

how does fibroelastic cartilage effect movement

A

limits movement

72
Q

how does elastic cartilage bend

A

easy

73
Q

what is the structure of elastic cartilage

A

matrix

74
Q

what is bone mostly composed of

A

collagen in mineralized substance

75
Q

what happens to bone without collagen

A

bones shatter

76
Q

what happens to bone without minerals

A

bones bend

77
Q

where is lymph found

A

interstitial fluid

BMS 300 (14 decks)

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