![Slide Of Epithelial Tissue](http://www.skyline2002.com/cdn/shop/products/S-089-SlideOfEpitheliumTissue_{width}x.jpg?v=1608716537)
Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.