Question

What are the functions of epithelial tissues ?

Answer 1

Epithelial tissues

1. The epithelial tissue is a type of simple tissue which forms the covering or outermost layer in the animal body.
2. Epithelium covers most organs and cavities within the body.

Functions

1. Epithelium grows in various parts of the body and carries out different functions according to its location.

The main functions of epithelium are:

1. The epithelium is a permeable layer that carries out the function of transport and exchange of materials between the body and the external environment.
2. The epithelial tissues help to absorb water and nutrients in the alimentary canal.
3. The epithelial tissues form a protective layer around the organs, lining of the mouth, and alimentary canal.
4. The epithelial tissues in the nephrons of the kidneys help to eliminate waste products.
5. The epithelial tissues have a secretory function as a variety of substances like saliva, sweat, enzymes, etc.
6. The epithelial tissues act as a barrier and help to protect the body from viral or bacterial infections and also protect the underlying cells from drying, injury, and chemical effects.