Connective Tissue Flashcards

1
Q

What is connective tissue made up of?

A

Extracellular matrix- ground substance and fibres (collagen, reticular fibres, elastic fibres)
Cells

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2
Q

Name 3 types of specialised connective tissue?

A
Blood
Cartilage
Adipose tissue
Lymphatic tissue
Haemopoietic tissue
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3
Q

What is the origin of mesenchymal cells?

A

The mesoderm cells of the middle embryonic germ layer

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4
Q

What is mesenchyme?

A

Multipotent progenitor cells which can give rise to various connective tissue

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5
Q

What is ground substance made up of?

A

Proteoglycans- core protein + 100s of GAG units
Hyaluronic acid
Collagen fibrils
Water

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6
Q

Describe the structure of a type I collagen fibre

A

Staggered collagen molecules which form a repeating banding pattern. Composed of a triple helix of a-chains. Every third amino acid is a glycine molecule

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7
Q

Name the three types of connective tissue structures + where they can be found

A

Loose- mammary gland
Dense regular- dermis, thymus gland
Dense irregular- tendons, skeletal muscle

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8
Q

What happens to the lipid droplets in

i. ) brown adipose tissue?
ii. ) white adipose tissue?

A

i. ) remain separate

ii. ) fuse to form large lipid droplet

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9
Q

What is the function of connective tissue?

A

Support
Medium for diffusion
Infection defence
Cushioning between organs

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