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The muscular layer (muscular coat, muscular fibers, muscularis propria, muscularis externa) is a region of submucosa. It is responsible for gut movement such as peristalsis. The Latin, tunica muscularis, may also be used.
It usually has two layers of smooth muscle:
However, there are some exceptions to this pattern.
The inner layer of the muscularis externa forms a sphincter at two locations of the alimentary canal:
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
Latin literature, Romance languages, Ancient Rome, Rome, Ecclesiastical Latin
Creative Commons, Free software, Intellectual property, Copyright, Orphan works
Terminologia Anatomica, Histology, Connective tissue, Human body, ATC code A
Stomach, Human body, Serous membrane, Muscular layer, Submucosa
Abdomen, Liver, Stomach, Latin, Rectum