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nouna ring of muscle that contracts to close an opening
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Synonyms & Similar Words
muscle anatomical sphincter sphincter muscle musculus musculus sphincter ani musculus sphincter ductus choledochi musculus sphincter ductus pancreatici musculus sphincter pupillae musculus sphincter pylori musculus sphincter urethrae musculus sphincter vesicae physiological sphincter pupillary sphincter pyloric sphincter pyloric valve sphincter ani anal sphincter urethral sphincter bladder sphincter