What are the characteristics of epithelial tissues!?
Answers
Epithelial tissues have five main characteristics.
Polarity– all epithelia have an apical surface and a lower attached basal surface that differ in structure and function. ...
Specialized contacts– epithelial cells fit close together and form continuous sheets (except in the case of glandular epithelia).
Answer:
Characteristics of epithelial tissue:
i. Epithelial tissue covers the body outside and lines the various cavities inside.
ii. Epithelial tissue lines the hollow organs, body cavities, blood vessels and ducts.
Epithelial tissue originates from all the three primary germ layers, i.e. ectoderm,endoderm and mesoderm.
iv. Cells of an epithelial tissue are compactly arranged and having a very little or no intercellular space is seen. They form a continuous sheet.
v. Cells are rested on thin, doubled layered, non-cellular basement membrane.
vi. Epithelial tissue has nerve supply of its own.
vii. Epithelial tissue is avascular (a without, vascular = vessel), i.e. it lacks its own blood supply and hence, obtains nutrients which diffuse out of blood vessels.
viii. Epithelial tissue has the power of division and regeneration. The old injured dead cells are sloughed
off regularly and are replaced by new ones.