mucous membrane

noun

: a membrane rich in mucous glands
specifically : one that lines body cavities and passages (as of the gastrointestinal or respiratory tract) which communicate directly or indirectly with the outside of the body : mucosa
Pruritus and congestion involving mucous membranes of the eyes, nose, and mouth are frequently observed, and swelling of the lips or tongue may impair swallowing and ventilation. Bruce S. Bochner et al.

Examples of mucous membrane in a Sentence

Recent Examples on the Web All these exposures damage the structures that have evolved to protect humans from infection, including the skin and the mucous membranes of the gut and lungs. Kari Nadeau, STAT, 4 Apr. 2024 Hand contacts with fomites and mucous membranes are a potentially dangerous combination. Sabrina Sholts, Smithsonian Magazine, 12 Mar. 2024 Our body's nervous system is controlled solely by the brain; the immune system involves the bone marrow, spleen, thymus, tonsils, mucous membranes and skin. Karen Weintraub, USA TODAY, 1 Jan. 2024 Less common routes include contact with open wounds or the mucous membranes of the eyes, nose or mouth. Discover Magazine, 9 Jan. 2024 The innate immune response is the general way the skin, mucous membranes, immune system cells and proteins fights germs. Jen Christensen, CNN, 14 Feb. 2024 So might anatomical responses to those changes, such as the effect of colder or drier air on mucous membranes and the epithelium of the respiratory tract. WIRED, 2 Oct. 2023 Basically, congestion is the swelling of the mucous membranes that line the nose. Marla Broadfoot, Scientific American, 1 Dec. 2023 These medications act on adrenergic receptors on the blood vessels that line the nose’s mucous membranes. Marla Broadfoot, Scientific American, 1 Dec. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'mucous membrane.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

circa 1771, in the meaning defined above

Time Traveler
The first known use of mucous membrane was circa 1771

Dictionary Entries Near mucous membrane

Cite this Entry

“Mucous membrane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mucous%20membrane. Accessed 19 Apr. 2024.

Kids Definition

mucous membrane

noun
: a membrane rich in mucous glands
especially : one lining body passages and cavities (as of the nose or lungs) which connect directly or indirectly with the outside

Medical Definition

mucous membrane

noun
: a moist membranous layer rich in mucous glands that lines body passages and cavities (as of the digestive, respiratory, and genitourinary tracts) which connect directly or indirectly with the exterior, that functions in protection, support, nutrient absorption, and secretion of mucus, enzymes, and salts, and that is composed of epithelium supported below by the lamina propria and sometimes by the muscularis mucosae

called also mucosa

compare serous membrane

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