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A&P chpt 4 epith tis

QuestionAnswer
Glands Structures that produce fluid secretions; they are either attached to or derived from epithelia
basal lamina aka basement membrane. a complex structure produced by the basal surface of the epithelium and the underlying connective tissue
Cell adhesion molecules (CAMs) Transmembrane proteins which bind to each other and to extracellular materials
Intercellular cement a thin layer of proteoglycans that contain polysaccharide derivatives; may bond membranes of adjacent cells
hyaluronan (hyaluronic acid) polysaccharide derivatives contained inside of intercellular cement
cell junctions specializd areas of the plasma membrane that attach a cell to another cell or to extracellular materials
occluding (tight) junctions where the lipid portions of the two plasma membranes are tightly bound together by interlocking membrane proteins; adhesion belt forms a band that encircles cells and binds them to their neighbors
gap junction where two cells are held together by interlocking junctional proteins called connexons
desmosome where CAMs and proteoglycans link the opposing plasma membranes. very strong and can resist stretching and twisting
germinative cells most stem cells that are located near the basal lamina, in a relatively protected location
endocrine glands produces secretions, which are released directly into the surrounding interstitial fluid
exocrine glands produce exocrine secretions, which are discharged onto an epithelial surface
Created by: jgqb16
 

 



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