Epithelial vs. Epithelium — What's the Difference?

Membranous tissue composed of one or more layers of cells separated by very little intercellular substance and forming the covering of most internal and external surfaces of the body and its organs.

Epithelium () is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. It is a thin, continuous, protective layer of cells.

(anatomy) Of or pertaining to the epithelium.

Membranous tissue composed of one or more layers of cells separated by very little intercellular substance and forming the covering of most internal and external surfaces of the body and its organs.

Of or pertaining to epithelium; as, epithelial cells; epithelial cancer.

(anatomy) A membranous tissue composed of one or more layers of cells which forms the covering of most internal and external surfaces of the body and its organs: internally including the lining of vessels and other small cavities, and externally being the skin.

Of or belonging to the epithelium;

The superficial layer of cells lining the alimentary canal and all its appendages, all glands and their ducts, blood vessels and lymphatics, serous cavities, etc. It often includes the epidermis (i. e., keratin-producing epithelial cells), and it is sometimes restricted to the alimentary canal, the glands and their appendages, - the term endothelium being applied to the lining membrane of the blood vessels, lymphatics, and serous cavities.

Membranous tissue covering internal organs and other internal surfaces of the body