anatomical sphincter

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a ring of muscle that contracts to close an opening
• Syn:
sphincter, sphincter muscle
• Hypernyms:
muscle, musculus
• Hyponyms:
physiological sphincter, anal sphincter, sphincter ani, musculus sphincter ani, urethral sphincter,
musculus sphincter urethrae, bladder sphincter, musculus sphincter vesicae, musculus sphincter ductus choledochi, musculus sphincter ductus pancreatici, pupillary sphincter,
musculus sphincter pupillae, pyloric sphincter, pyloric valve, musculus sphincter pylori