Question

what is epithelial tissue?

Answer 1

Epithelial tissues are thin tissues that cover all the exposed surfaces of the body. They form the external skin, the inner lining of the mouth, digestive tract, secretory glands, the lining of hollow parts of every organ such as the heart, lungs, eyes, ears, the urogenital tract, as well as the ventricular system of the brain and central canals of the spinal cord.

Answer 2

the tissue which is found in close attachment to the outside environment or lines the inner body cavities..