Meaning | The sphincter muscle of the anus. |
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Synonyms | anal sphincter, sphincter ani |
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Part of | anus | The excretory opening at the end of the alimentary canal |
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Parts | musculus sphincter ani externus | An external ring of striated muscle surrounding the anus |
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musculus sphincter ani internus | An internal ring of smooth muscle formed by circular fibers of the rectum |
Broader | sphincter, anatomical sphincter, sphincter muscle | A ring of muscle that contracts to close an opening |
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Spanish | esfinter anal, esfínter anal, esfínter del ano |
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Catalan | esfínter anal, esfínter de l'anus |
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