Answer: Skin
Step-by-step explanation:
The epithelial tissues are the thin tissues that covers all the parts of the body. These covers all the exposed surfaces of the body. These covers the dermal tissues, inner lining of the mouth, secretary glands, lining of hollow regions of the organs like eyes, ears, heart, lungs and the urogenital tract as well as the ventricular system of the spinal cord and the brain. Skin is the example of epithelial tissues it covers the inner dermal layers of the skin. It provides protection against the injuries and entry of the pathogens.