\tThis tissue which has a free surface faces either a body fluid or the outside environment and thus provides a covering or a lining for some part of the body is called epithelial tissues.\tThe cells are compactly packed with little intercellular matrix.\tThere are two types of epithelial tissues\tsimple epithelium\tcompound epithelium.\tSimple epithelium is composed of a single layer of cells and functions as a lining for body cavities, ducts etc.\tCompound epithelium consists of two or more cell layers and has protective function as it does in our skin.