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8 Cards in this Set

  • Front
  • Back
4 basic tissues
1) Epithelium (covering,lining, secretion)

2)Connective tissue (Support, protection)

3)Muscle (movement)

4)Nerve (transmition of nerve impulse)
Organs' cells
1)parenchyma-composed of cells responsible for main func.

2)Stroma-supporting tissue, composed of conn. tissue(except brain/spinal cord)
epithelial gen characteristics
1)closely aggreg. polyhedral cells w/
very little Extracell subst.
-strong adhesion to eachother

2)form continuous sheets or discrete clusters

3)Rests on basement membrane

4)little extracell matrix

5)lacks direct vascular supply

6)may form exocrine or endocrine glands
epith. funcs.
protecion
sensory reception
secretion
excretion
lubrication
absorption
reproduction
epithelial classification methods
-number of cell layers
-shape of most superficial cells
-special secretions and surface modifications
# of cell layers classes
-one layer = simple
-two or more layers = stratified
-all cells on basal lamina, but not all reach surface = pseudostratified
-variable #(3-6) of layers=transitional
classes-shapes of sup. cells
flat = squamous
rounded,hexagon,polygonal=cuboidal
tall,cylindrical=columnar
classes-special secret/surf mods
-secret mucous=goblet cells, mucous epithelium (intest,stomach)

-accum protect. layer of keratin = keratinized epithelium (skin)

-Surface mods:
junctional complexes(most epith)
Microvilli: striated or brush border
(small intestine)
cilia: ciliated epith (trach, bronch)