Ch 4, 3 connective tissues Flashcards Preview

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Flashcards in Ch 4, 3 connective tissues Deck (12):
1

general

most widely and abundantly distributed

2

four classes of connective tissue

connective tissue proper
cartilage
bone
blood

3

5 major functions of connective tissue

1. binding/anchoring
2. supporting
3. transportation
4. protection
5. insulation

4

3 general characterises

1. all have mesenchyme as their common tissue
2. have varying degrees of vascularity
3. cells are scattered in non living extracellular matrix

5

ground substance

-fills space between cells
-acts as a filter, materials can diffuse through
-contains--- Interstitial fluid- reservoir\
adhesion proteins (CAM) allows cells to attach to matrix
proteoglycans- form a gel like substance which stores water


6

collagen fibers

thick, white, very strong, most abundant, has high tensile strength
resists stretching
protein=collagen

7

elastic fiber

thin, yellow, stretchy fibers
recoil-like elastic
has branching networks
-skin, lungs, blood vessel walls

8

reticular fibers

thin, collagen fibers, short, fine, highly branched
more flexible than collagen fibers
forms internal skeleton of some organs
-abundant where connective tissue abuts other tissue

9

Blasts

immature, mitotically active and secretory cells
fibroblasts-connective tissue proper\
osteoblasts in bone
chondroblasts in cartilage

10

cytes

blasts develop into mature cells which maintain the matrix but can revert back to blasts type to repair tissue

11

defense cells

WBC, macrophages-eat things

12

adipose cells

fat storage cells