[[1]] tissue covers the surface of the animal body and provides protection from the external environment.

Epithelial tissue covers the surface of the animal body and provides protection from the external environment.

Epithelial tissue is made of compactly arranged cells with no intercellular matrix and forms a continuous sheet.  It covers the outer surface of the body and also lines the internal organs and cavities present inside the body.

It also works as a barrier that forms the boundary of the different organs in the animal’s body.