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Sphincter - Wikipedia

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A sphincter is a circular muscle that normally maintains constriction of a natural body passage or orifice and relaxes as required by normal physiological functioning. Sphincters are found in many animals. There are over 60 types in the human body,[citation needed] some microscopically small, in particular the millions of precapillary sphincters.[1] Sphincters relax at death, often releasing fluids and faeces.[2]

Sphincter - Wikipedia Jump to content From Wikipedia, the free encyclopedia Circular muscle that normally maintains constriction of a natural body passage or orifice Sphincter Identifiers TA98 A04.0.00.028 TA2 1992 FMA 75004 Anatomical terms of muscle [ edit on Wikidata ] Look up sphincter in Wiktionary, the free dictionary. A sphincter is a circular muscle that normally maintains constriction of a natural body passage or orifice and relaxes as required by normal physiological functioning. Sphincters are found in many animals. There are over 60 types in the human body , [ citation needed ] som

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