https://wikimd.org/index.php?action=history&feed=atom&title=Muscularis_mucosaeMuscularis mucosae - Revision history2026-04-27T01:57:04ZRevision history for this page on the wikiMediaWiki 1.44.2https://wikimd.org/index.php?title=Muscularis_mucosae&diff=6318820&oldid=prevPrab: CSV import2025-02-18T04:49:05Z<p>CSV import</p>
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<p><b>New page</b></p><div>'''Muscularis mucosae''' is a thin layer of muscle found in the walls of several organs, including the [[stomach]], [[intestines]], and [[esophagus]]. It is part of the [[mucosa]], the innermost layer of the gastrointestinal tract. The muscularis mucosae is distinct from the [[muscularis propria]], which is a thicker layer of muscle found further out in the walls of these organs.<br />
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==Etymology==<br />
The term "muscularis mucosae" is derived from the Latin ''musculus'' meaning "muscle", and ''mucosa'', referring to the mucus-secreting layer of the gastrointestinal tract. <br />
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==Structure==<br />
The muscularis mucosae is composed of smooth muscle fibers. It separates the [[lamina propria]], a layer of loose connective tissue, from the [[submucosa]], a layer of dense irregular connective tissue. The muscularis mucosae is responsible for the movement of the mucosa, allowing for increased contact with the lumen, the inside space of a tubular structure.<br />
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==Function==<br />
The primary function of the muscularis mucosae is to facilitate the movement of the mucosa, which aids in the absorption and secretion processes of the gastrointestinal tract. It also plays a role in the formation of [[gastrointestinal villi]], small finger-like projections that increase the surface area of the intestine.<br />
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==Clinical significance==<br />
Abnormalities in the muscularis mucosae can lead to various medical conditions. For example, thickening of the muscularis mucosae is often associated with [[gastrointestinal stromal tumors]] (GISTs). Additionally, the presence of muscularis mucosae invasion is a key factor in the staging of [[colorectal cancer]].<br />
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==See also==<br />
* [[Gastrointestinal tract]]<br />
* [[Mucosa]]<br />
* [[Submucosa]]<br />
* [[Muscularis propria]]<br />
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[[Category:Anatomy]]<br />
[[Category:Gastroenterology]]<br />
[[Category:Histology]]<br />
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