LATEST UPDATE (GRADED A+)
Epithelial tissue
one or more layers of cells that line the inside or outside of the body, and organ, or part of an organ,
purple nuclei
Squamous
irregular, thin, flat, shingle-like wit a flat nucleus
cuboidal
round or cube shaped with a round nucleus
columnar
tall and narrow with oval nucleus near basal surface
simple
1 layer of cells
stratified
2 or more layers
pseudostratified
some cells are taller than others giving the appearance of multiple layers
transitional
the cells are more round in all layers
simple cell job
absorption, filtration, secretion
squamous cell job
aids in filtration and exchange
columnar and cuboidal
secretion and absorbtion
stratified location
Areas of high abrasion
simple squamous location
interior wall of the heart, blood vessels, lung alveoli, serous membranes