EPITHELIUM

Epithelium

Epithelium is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of structures throughout the body, and also form many glands. Functions of epithelial cells include secretion, selective absorption, protection, transcellular transport and detection of sensation. In Greek "ἐπί" means "on" or "upon", and "θηλή" means "nipple".

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epithelium

Noun

  1. 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.


The above text is a snippet from Wiktionary: epithelium
and as such is available under the Creative Commons Attribution/Share-Alike License.

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