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Mucus

Mucus is a thick, slippery and usually clear substance that is produced in the lining of body cavities or canals, such as the nose, throat, sinuses, and airways of the lungs. Mucus protects and moistens the lining of body organs, such as the stomach and intestines, and traps dust particles, smoke, bacteria, and other irritants that enter the nose when a person inhales.

Mucus that becomes too thick and sticky can block the airway or digestive system or cause other problems in the body. Thick and sticky mucus is difficult for the body to remove and can increase the risk of infection.

ByHealthwise Staff
Primary Medical ReviewerPatrice Burgess, MD - Family Medicine
Specialist Medical ReviewerDonald R. Mintz, MD - Otolaryngology

Current as ofNovember 14, 2014

WebMD Medical Reference from Healthwise

Last Updated: November 14, 2014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.