Glossary of Medical Terms

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MUSCULUS SPHINCTER ANI INTERNUS

A smooth muscle ring, formed by an magnify of the circular fibres of the rectum, located at the upper end of the anal canal, inside to the outer voluntary outside anal sphincter. This sphincter is maximally-contracted when the rectal ampulla is at rest -empty or relaxed to accommodate a distending faecal mass. It is inhibited with filling of the ampulla, heighten distension and peristalsis. Synonym: musculus sphincter ani internus, inside sphincter muscle of anus.
Linguatulidae   linguatulina   linguiform   linguistics   lingula   lingula cerebelli   lingula mandibulae   lingula of cerebellum   (0)
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