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MC Bio 204 ch 4 CT
connective tissues
| Question | Answer |
|---|---|
| mesenchyme | embryonic tissue that is the ancestor of all connective tissue |
| two major elements of extracellular matrix | ground substances and fibers |
| three major types of ground substance | proteoglycens, cell adhesion molecules, interstitial fluid |
| three major types of fiber | collagen, elastic fibers, reticular fibers |
| fibroblasts | CT cells that produce matrix material |
| macrophages | a type of phagocyte; engulf + devour foreign bodies |
| plasma cells | F/produce antibodies |
| mast cells | F/produce heparin (an anticoagulant) and histamine (a secretion that makes capillaries leaky, aiding in inflammation) |
| collagen fibers | A/often appear pink on slides || L/heavy presence in tendons and ligaments || F/flexibility and strength |
| tendons | LF/connect muscle and bone |
| ligaments | LF/connect bones |
| reticular fibers | A/form branching networks || LF/support organs || L/blood vessels, areolar CT, adipose CT, smooth MT |
| elastic fibers | A/smaller and thinner than collagen fibers || F/easily return to original strength after stretchingL/blood vessels, skin, lung tissue |
| -blast | refers to an immature cell that can still undergo cell division |
| -cyte | refers to a mature cell that no longer undergoes cell division; maintains matrix as it is |
| areolar CT | the "classic type" of CT; contains all 3 types of fiber || A/large mast cells embedded amid smaller fibroblasts || L/perimeter of organs || F/collagen fiber resists tensile force |
| adipose CT | A/much less extracellular matrix than most CT || A/nuclei are displaced to the edges of cells || L/surrounding heart, eyes || L/breasts, hips, abdomen, buttocks || F/energy reserve, insulation, padding/protection of organs |
| reticular CT | A/can be confused with elastic cartilage || A/dense networks of dark, branched, short reticular fibers || L/lymph nodes, bone marrow, thymus || F/netlike structures catch + filter material in lymph before it returns to the cardiovascular system |
| three major types of loose connective tissue | areolar CT, adipose CT, reticular CT |
| five types of connective tissue | loose CT, dense CT, cartilage, osseous tissue (bone), liquid CT (blood and lymph) |
| three major types of dense connective tissue | dense regular CT, dense irregular CT, elastic CT |
Created by:
dglenn34
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