most stem cells that are located near the basal lamina, in a relatively protected location
hyaluronan (hyaluronic acid)
polysaccharide derivatives contained inside of intercellular cement
desmosome
where CAMs and proteoglycans link the opposing plasma membranes. very strong and can resist stretching and twisting
endocrine glands
produces secretions, which are released directly into the surrounding interstitial fluid
Cell adhesion molecules (CAMs)
Transmembrane proteins which bind to each other and to extracellular materials
gap junction
where two cells are held together by interlocking junctional proteins called connexons
exocrine glands
produce exocrine secretions, which are discharged onto an epithelial surface
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
Intercellular cement
a thin layer of proteoglycans that contain polysaccharide derivatives; may bond membranes of adjacent cells
basal lamina
aka basement membrane. a complex structure produced by the basal surface of the epithelium and the underlying connective tissue
