Connective Tissue Flashcards

1
Q

What are the types of connective tissue

A

collagen, reticular, elastic

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2
Q

What forms the connective tissue

A

mesoderm

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3
Q

What are the functions of connective tissue

A

energy storage, repair, transport, protection

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4
Q

What is the function of collagen fibres

A

provide cushioning and strength

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5
Q

Describe dermis

A

dense and irregular

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6
Q

Describe type 1 collagen

A

large branched fibres

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7
Q

Describe type 4 collagen

A

forms sheets - basement membrane

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8
Q

Describe type 7 collagen

A

short fibrils

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9
Q

What is the function of type 7 collagen

A

anchor cells to BM

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10
Q

What is collagen made by

A

fibroblasts

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11
Q

What amino acids is collagen rich in

A

glycine and proline

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12
Q

Where is reticular tissue found

A

lymph nodes and bone marrow

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13
Q

What is reticular tissue formed from

A

short reticular fibres

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14
Q

What does reticular tissue produce

A

short fibres of collagen, scaffolding

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15
Q

What do reticular cells make

A

reticular fibres

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16
Q

Describe the appearance of elastic fibres

A

yellow and thin

17
Q

What do elastic fibres produce

A

elastic tissues

18
Q

What are elastic fibres

A

bundles of proteins

19
Q

Where are elastic fibres found

A

extracellular matrix

20
Q

What produces elastic fibres

A

fibroblasts, smooth muscle cells

21
Q

What do elastic fibres allow

A

stretch and recoil

22
Q

What are some examples of connective tissue cells

A

mast cells, macrophages, chondrocytes, plasma cells

23
Q

What is the active form of connective tissue cells

A

fibroblasts

24
Q

What is the inactive form of connective tissue cells

A

fibrocytes

25
Q

Describe fibroblasts

A

round nuclei, euchromatic, light stain

26
Q

Describe fibrocytes

A

flat heterochromic nucleus, dark stain, little cytoplasm

27
Q

What are adipocytes

A

fat cells

28
Q

Describe white fat cells

A

unilocular, one large fat droplet

29
Q

Describe brown fat cels

A

multilocular, small droplets

30
Q

Which fat cell is metabolically active

A

brown fat cells

31
Q

What do adipocytes contain

A

lots of smooth ER, pinocytic vesicles

32
Q

What is the fucntion of type 3 collagen

A

protective sleeve

33
Q

What is the function of adipocytes

A

receptor for insulin, thyroid hormones

34
Q

What does the ECM retain

A

water, sodium, positive ions

35
Q

Describe the ECM charge

A

highly negative

36
Q

What do proteoglycans allow

A

selective diffusion

37
Q

What are the types of GAGs

A

hyaluronic acid, chrondroitin sulphate, hepapran sulphate

38
Q

Where are hepapran sulphates found

A

lung, basement membrane, liver

39
Q

Where are keratan sulphates found

A

cartilage, intervertebral discs