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

Functions of epithelial tissue:

(i) Protection: Epithelial tissue protects the underlying parts from germs, harmful chemicals and injury. The skin, which protects the body, is also made of squamous epithelium.

(ii) Absorption: Epithelial lining of intestine absorb digested food.

(iii) Excretion: Epithelial lining of kidneys help in excretion of nitrogenous waste materials.

(iv) Secretion: Epithelial lining of endocrine glands secrete useful substances.