stratified epithelium


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epithelium

 [ep″ĭ-the´le-um] (pl. epithe´lia) (Gr.)
the cellular covering of internal and external surfaces of the body, including the lining of vessels and other small cavities. It consists of cells joined by small amounts of cementing substances. Epithelium is classified into types on the basis of the number of layers deep and the shape of the superficial cells.
ciliated epithelium epithelium bearing vibratile, hairlike processes (cilia) on its free surface.
columnar epithelium epithelium whose cells are of much greater height than width.
cuboidal epithelium epithelium whose cells are of approximately the same height and width, and appear square in transverse section.
germinal epithelium thickened peritoneal epithelium covering the gonad from earliest development; formerly thought to give rise to germ cells.
glandular epithelium that composed of secreting cells.
pigmentary epithelium (pigmented epithelium) that made of cells containing granules of pigment.
sense epithelium (sensory epithelium) neuroepithelium (def. 1).
simple epithelium that composed of a single layer of cells.
squamous epithelium that composed of flattened platelike cells.
stratified epithelium epithelium made up of cells arranged in layers.
transitional epithelium a type characteristically found lining hollow organs, such as the urinary bladder, that are subject to great mechanical change due to contraction and distention; originally thought to represent a transition between stratified squamous and columnar epithelium.

strat·i·fied ep·i·the·li·um

epithelium composed of a series of layers, the cells of each varying in size and shape, where only the basal layer of cells comes in contact with the basement membrane. The term derives from the type of cells at the surface, for example, stratified squamous epithelium, stratified columnar epithelium, stratified cilliated columnar epithelium.

strat·i·fied ep·i·the·li·um

(strat'i-fīd ep'i-thē'lē-ŭm)
A type of epithelium composed of a series of layers, the cells of each varying in size and shape. It is named more specifically according to the type of cells at the surface, e.g., stratified squamous epithelium, stratified columnar epithelium, stratified ciliated columnar epithelium.
Synonym(s): laminated epithelium.

stratified epithelium

see EPITHELIUM.
References in periodicals archive ?
Membrane permeability studies have been proven that arecoline and arecaidaine diffuses across a stratified epithelium. This research was justified because genotoxic and mutagenic effects have not exposed to betel compound.12
K76 is produced in the upper layers of the stratified epithelium of the hard palate and gingiva.
These findings were mainly observed in simple stratified epithelium and, at a lower intensity, in deeper areas of the stroma, as well as, in prismatic columnar epithelium.
Simple epithelium consists of only one layer of cells, whereas stratified epithelium consists of two or more layers of cells.
And the cells co-cultured were able to form a stratified epithelium confluent limbal cultures on transplantation onto the dermal bed of the nude mice, the cells adhered firmly and cells exhibited the limbal phenotype properties.
signaling), cell matrix adhesions in three dimensions, cell-cell junctions, signaling to and through the endothelial adherens junction, gap junctions (connexin functions), tight junctions in simple and stratified epithelium, desmosomes in development and disease, cadherin trafficking and junction dynamics, and cross-talk in cell-cell and cell-matrix adhesions.
Complementarity, the stratified epithelium and high number of goblet cells found in pirarucu and other fish species protect the oesophagus against mechanical and chemical injuries and lubricate food passage (Albrecht et al.; Wilson & Castro).