What is the ephithelium?

Answer 1

How does epithelium relate to the the cells?

Answer 2

The epithelium is a type of tissue that lines the surfaces of organs and structures throughout the body, providing protection, absorption, and secretion functions. It can be found in areas such as the skin, respiratory tract, gastrointestinal tract, and blood vessels. Epithelial cells are closely packed together and can be classified based on their shape and layers.