Term
|
Definition
a sheet of cells that cover a body surface or lines a body cavity.
Covering the epilthelium
forms the outer layer of the skin, dips into and lines the open cavities of the cardiovascular, digestive, and respiratory systems, and overs the walls and organs of the closed ventral body cavity.
Glandular epithelium
Fashions the glands of the body |
|
|
Term
|
Definition
the epidermis of hte skin lies between the inside and the outside of the body.
epithelium lining the urinary bladder seperates underlying cells of the bladder wall from urine. |
|
|
Term
| Epithelial accomplishments |
|
Definition
| protection-absorbtion-filtration-excretion-secretion-sensory reception |
|
|
Term
| characteristics of epithelia |
|
Definition
cellularity- almost entirely close packed cells. only a tiny amount of extracellular materila lies in the narrow spaces between cells.
Specialized contacts, cells fit close together to form continous sheets. adjacent cells are bound together at many points by lateral contacts, including tight junctiongs and desmosomes. |
|
|
Term
|
Definition
| epithelia are polarized. apical surfacce- exposed to the body exterior or the cavity of an internal organ. |
|
|
