musculus sphincter ani internus 1
noundomain: body part
Princeton WordNet [ver.3.1]
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EnglishDefinition
an internal ring of smooth muscle formed by circular fibers of the rectum
Hypernym
smooth muscle 1
noun
a muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart)
Part_meronym
anal sphincter 1
noun
the sphincter muscle of the anus
EnglishPart_holonym
anal sphincter 1
noun
the sphincter muscle of the anus
