Cell junctions and tissues Flashcards

1
Q

what are the 3 types of cell junctions

A

anchoring, gap, tight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what do tight junctions contain

A

claudins (cats have tight claws)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what do gap junctions contain

A

connexions (gap in the cone)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are the 4 types of anchoring junctions

A

adherens, desmosomes, hemidesmosomes, focal adhesions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what type of anchoring junctions are cadherins

A

adherens and desmosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what type of anchoring junctions are integrins

A

hemidesmosomes and focal adhesions (has an i in it)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what type of junction is integrins and cadherins

A

anchoring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what type of anchoring junctions is actin responsible for

A

adherens and focal adhesions (actin - starts with a)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what type of anchoring junctions is intermediate filaments responsible for

A

desmosomes and hemidesmosomes (SOME words are just long)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what are cadherins dependent on

A

calcium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is cell to cell communication called

A

gap junctions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is a singular connexon called

A

connexin (i looks like a 1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what cell junction connects the cytoplasm

A

gap junctions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

how do connexons differ

A

in permeability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what cell junctions hold cells together and are leak proof

A

tight junctions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what cell junctions fuse adjacent membranes

A

tight junctions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what are the main transmembrane proteins

A

claudins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what happens when the claudins let bad stuff in

A

tumorigenesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

how do claudins let bad stuff in

A

impaired barrier function

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what recovers claudins

A

probiotics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what cell junctions adheres cells to other cells

A

anchoring junctions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what do anchoring junctions provide

A

strong membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

where do anchoring junctions lie

A

below tight junctions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what are the functions of junctions

A

attachment, separation, communication, cell polarity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
where is simple squamous tissue found
blood vessels and body cavities (blood and open cavities make me sqeamous)
26
where is simple cuboidal tissue found
glandular tissue (boi my glands are acting up)
27
where is simple columnar tissue found
stomach and intestines (poop piles up in columns)
28
where is stratified squamous tissue found
epidermis (thick and flat tissue)
29
where is stratified cuboidal tissue found
ducts and glands
30
where is psuedostratified tissue found
upper respiratory
31
what is transitional tissue found
urinary tract
32
what are the 3 types of connective tissue
proper, supportive, fluid
33
what are the 2 types of CT proper
loose and dense
34
what are the 3 types of loose CT
areolar (nipples are loose), adipose (loose fat jiggle), and reticular (rectangles are loose squares)
35
what are the 3 types of dense CT
regular, irregular, elastic
36
what are the 2 types of supportive CT
cartilage and bones
37
what are the 3 types of cartilage
hyaline, fibrocartilage, and elastic
38
what are the 2 types of bone
compact and spongy
39
where is areolar CT found
under epithelial
40
what is the function of collagen fibers in CT
holds CT together
41
what is the function of elastic fibers in CT
return back to normal after stretching
42
what are mesenchymal cells
adult stem cells
43
what do mesenchymal cells differentiate for
repair
44
what do fibroblasts secrete to form matrix
polysaccharides and proteins
45
what do macrophages release
cytokines
46
what does the release of cytokines by macrophages cause
recruitment of more immune cells
47
what is the function of mast cells
kill pathogens
48
what is the function of microphages
attacks pathogens
49
what do lymphocytes develop into
antibody producing plasma cells
50
what are the characteristics of ground substance
clear, viscous matrix
51
what is the function of ground substance
absorbs shock
52
what is ground substance made of
proteoglycans
53
what do proteoglycans do
trap water
54
what are glycosaminoglycans made of
sugar
55
what is the charge of glycosaminoglycans
negative
56
where are proteoglycans assembled and how do they leave
assembled in the cell and leave via exocytosis
57
what are the two things that make up proteoglycans
polypeptide and monosaccharides
58
where does the elongation of glycosaminoglycans occur
trans golgi
59
what is the yellow part of adipose tissue called
carotene
60
what do capillaries store in adipose tissue
calories as fat
61
what is reticular tissue
mesh-like framework for organs
62
what is the purpose of dense CT
strength and resistance
63
what CT are ligaments and tendons made of
dense regular CT
64
what is the difference between dense irregular and dense regular
regular is parallel and irregular is random
65
what CT is the dermis made of
dense irregular CT
66
where are chondrocytes in cartilage found
lacunae
67
describe the collagen in hyaline cartilage
dispersed
68
what does hyaline cartilage do for joints
makes them moveable
69
describe the collagen in fibroelastic cartilage
thick bundles
70
what does the thick bundles of cartilage in fibroelastic cartilage cause
causes fibroelastic cartilage to be tough
71
how does fibroelastic cartilage effect movement
limits movement
72
how does elastic cartilage bend
easy
73
what is the structure of elastic cartilage
matrix
74
what is bone mostly composed of
collagen in mineralized substance
75
what happens to bone without collagen
bones shatter
76
what happens to bone without minerals
bones bend
77
where is lymph found
interstitial fluid