Epithelial Tissue: Structure, Function & Examples

The type of tissue that consists of sheets of cells is called epithelial tissue. Epithelial tissue forms the linings of various surfaces in the body, such as the skin, the linings of internal organs, and the inner linings of blood vessels. It serves as a protective barrier, regulating the movement of substances into and out of the body and providing a physical barrier against pathogens and external factors.