Question

Give four important functions of epithelial tissue. Name one specific place in the body where each function is carried out.

Answer 1

Functions of Epithelial tissues are:

(i) The cells of the body surface form the outer layer of skin. These cells protect the underlying cells from drying, injury, and chemical effects.

(ii) Inside the body, epithelial cells form lining of mouth and alimentary canal and protect these organs.

(iii) Epithelial tissues help in absorption of water and nutrients in small intestine.

(iv) Some epithelial tissues perform secretory function such as sweat, saliva in skin and mouth cavity.