Connective Tissue Flashcards by Isabella Smyth

Q

What are the types of connective tissue

A

collagen, reticular, elastic

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Q

What forms the connective tissue

A

mesoderm

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Q

What are the functions of connective tissue

A

energy storage, repair, transport, protection

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Q

What is the function of collagen fibres

A

provide cushioning and strength

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Q

Describe dermis

A

dense and irregular

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Q

Describe type 1 collagen

A

large branched fibres

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Q

Describe type 4 collagen

A

forms sheets - basement membrane

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Q

Describe type 7 collagen

A

short fibrils

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Q

What is the function of type 7 collagen

A

anchor cells to BM

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Q

What is collagen made by

A

fibroblasts

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Q

What amino acids is collagen rich in

A

glycine and proline

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Q

Where is reticular tissue found

A

lymph nodes and bone marrow

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Q

What is reticular tissue formed from

A

short reticular fibres

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Q

What does reticular tissue produce

A

short fibres of collagen, scaffolding

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Q

What do reticular cells make

A

reticular fibres

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Q

Describe the appearance of elastic fibres

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A

yellow and thin

Q

What do elastic fibres produce

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A

elastic tissues

Q

What are elastic fibres

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A

bundles of proteins

Q

Where are elastic fibres found

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A

extracellular matrix

Q

What produces elastic fibres

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A

fibroblasts, smooth muscle cells

Q

What do elastic fibres allow

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A

stretch and recoil

Q

What are some examples of connective tissue cells

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A

mast cells, macrophages, chondrocytes, plasma cells

Q

What is the active form of connective tissue cells

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A

fibroblasts

Q

What is the inactive form of connective tissue cells

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A

fibrocytes

Describe fibroblasts

round nuclei, euchromatic, light stain

Describe fibrocytes

flat heterochromic nucleus, dark stain, little cytoplasm

What are adipocytes

fat cells

Describe white fat cells

unilocular, one large fat droplet

Describe brown fat cels

multilocular, small droplets

Which fat cell is metabolically active

brown fat cells

What do adipocytes contain

lots of smooth ER, pinocytic vesicles

What is the fucntion of type 3 collagen

protective sleeve

What is the function of adipocytes

receptor for insulin, thyroid hormones

What does the ECM retain

water, sodium, positive ions

Describe the ECM charge

highly negative

What do proteoglycans allow

selective diffusion

What are the types of GAGs

hyaluronic acid, chrondroitin sulphate, hepapran sulphate

Where are hepapran sulphates found

lung, basement membrane, liver

Where are keratan sulphates found

cartilage, intervertebral discs