What is epithelial tissue??

Epithelial tissue is a type of tissue that lines the surfaces of organs, cavities, and structures in the body. It is composed of tightly packed cells that form a continuous sheet or layer. Epithelial tissue serves various functions, including protection, absorption, secretion, and sensation. It can be found in the skin, respiratory tract, digestive tract, urinary tract, and many other organs and structures throughout the body.