<P> Epithelium ( / ˌɛpɪˈθiːliəm / ) is one of the four basic types of animal tissue , along with connective tissue , muscle tissue and nervous tissue . Epithelial tissues line the outer surfaces of organs and blood vessels throughout the body , as well as the inner surfaces of cavities in many internal organs . An example is the epidermis , the outermost layer of the skin . </P>
where is epithelial tissue found in the human body
the outer surfaces of organs and blood vessels throughout the body the inner surfaces of cavities in many internal organs