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Biochemistry-Epithelium
Block 2
5
Medical
Graduate
12/06/2008

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Term
epithelial tissue
Definition
sheet of closely apposed cells that covers body surfaces or lines body cavities that are avascular
Term
functions of epithelia (6)
Definition
1. protection; 2. absorption; 3. transportation of materials; 4. secretion; 5. excretion; 6. exchange of gases
Term
characteristics of epithelial cells (5)
Definition
1. tightly attached to each other; 2. renew continuously by mitosis; 3. lack blood and lymphatic supply nutrients supplied by diffusion; 4. sometimes contain cells of different morphology and function (goblet cells); 5. surface domains (apical, lateral, basal)
Term
simple epithelium
Definition
has one layer of cells
Term
endothelial cells
Definition
simple squamous epithelium that lines blood vessels
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