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25 Cards in this Set

  • Front
  • Back
What are epithelial tissues?
Tissues that cover surfaces or line cavities in order to separate two distinct domains
What surface of epithelium faces air or fluid?
What is the basement membrane?
Noncellular domain that is the boundary btw. epi. and underlying connective tissue
Epithelia are vascular/avascular?
True/False: Epithelia are not capable of extensive and rapid regeneration.
False. they are
What does the term epitheliod designate?
cells that have some, but not all, characteristics of epithelials
What are the functions of epithelia?
5.Sensory Reception
6.Surface Transport
What designates simple epithelia?
one layer; cells rest on basement membrane
Where is simple squamous epithelia commonly located?
tubules of the kidney
Where are simple cuboidal epithelia located?
Many ducts
What signifies pseudostratified columnar?
1.Not all cells reach the free surface
2.Nuclei of diff. cell types spaced at diff. intervals
Where can pseudostratified columnar epithelium be located?
In the respiratory system.
Where is stratified squamous commonly located?
In areas of wear and tear; skin
Where is stratified cuboidal commonly located?
ducts of sweat glands; only 2 layers deep
Where is transitional epithelium usually located?
In areas that distention takes place (bladder, etc...)
Where is stratified columnar commonly seen?
In large excretory ducts of salivary glands, pancreas, mammaries; usually 2 layers deep
What types of processes are seen at apical surfaces?
Microvilli and cilia
What is microvilli and what is it made out of?
non-motile;slender cell processes formed by extensions of the plasmolemma
What is the terminal web?
the filamentous cytoplasm of microvilli formed from actin and other proteins
What are cilia?
Longer than microvilli, motile organelles that aids in moving debree to certain areas.
What forms the junctional complex?
1.Zonula occludens (tight junction)
2.Zonula adherens
3.Macula adherens
All nutrients and products enter/leave the epithelium through the __________?
Basement membrane
What is the BM composed of
Reticular fibers embedded in a mucopolysaccharide ground substance.
What are the two layers of the BM?
1.Basal lamina - contacts epitelials
2.Reticular lamina - doesn't
What anchors epithelials to the BM?