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Mucosa Definition

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Updated March 31, 2010

Written or reviewed by a board-certified physician. See About.com's Medical Review Board.

Definition: Mucosa refers to any of the moist tissue that lines our body cavities, including the respiratory tract (from the nose down into the lungs) and the gastrointestinal tract (from the mouth through the stomach and intestines).

Glands in the mucosa secrete a thick fluid called mucus.

Sources:

Medline Plus (a service of the National Institutes of Health). http://www.nlm.nih.gov/medlineplus/ency/article/002264.htm

Pronunciation: miuCOsa

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