URL of this page: //medlineplus.gov/ency/article/002264.htm


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



Merriam-Webster Dictionary. Mucosa. www.merriam-webster.com/dictionary/mucosa. Accessed January 24, 2017.

Review Date 12/10/2016

Updated by: Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.