Question

Describe the definition classification and functions of epithelium with exanples

Answer 1

1) simple squamous; (2) simple cuboidal; (3) simple columnar; (4) pseudostratified

Answer 2

Function of epithelial cells include secretion ,selective, absorption ,protection ,transcellular transport and sensing . Epithelial layers contain no blood vessels so they must receive nourishment via diffusion of substance from the underlying connective tissue through the basement membrane.