sphincter ani

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Noun1.sphincter ani - the sphincter muscle of the anus
anus - the excretory opening at the end of the alimentary canal
anatomical sphincter, sphincter, sphincter muscle - a ring of muscle that contracts to close an opening
musculus sphincter ani externus - an external ring of striated muscle surrounding the anus
musculus sphincter ani internus - an internal ring of smooth muscle formed by circular fibers of the rectum
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The importance of siting the pulled-through rectum accurately and symmetrically in the sphincter ani at primary operation is stressed, as fecal incontinence can occur with asymmetrical placement.
"They say man has succeeded where the animal fails because of the clever use of his hands, yet when compared to the hands, the sphincter ani (anal sphincter) is far superior.