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Mucosa is moist tissue that lines certain parts of the inside of your body. It is in your:

  • Nose
  • Mouth
  • Lungs
  • Urinary and digestive tracts

Glands in this tissue release a thick fluid called mucus.

Alternative Names

Mucous membrane


Review Date 11/2/2014

Updated by: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.