anatomical sphincter

noun
a ring of muscle that contracts to close an opening
Syn: ↑sphincter, ↑sphincter muscle
Hypernyms: ↑muscle, ↑musculus
Hyponyms:

Useful english dictionary. 2012.

Look at other dictionaries:

  • sphincter muscle — noun a ring of muscle that contracts to close an opening • Syn: ↑sphincter, ↑anatomical sphincter • Hypernyms: ↑muscle, ↑musculus • Hyponyms: ↑physiological sphincter, ↑ …   Useful english dictionary

  • sphincter ani — noun the sphincter muscle of the anus • Syn: ↑anal sphincter, ↑musculus sphincter ani • Hypernyms: ↑sphincter, ↑anatomical sphincter, ↑sphincter muscle • Part Holonyms: ↑ …   Useful english dictionary

  • sphincter — noun A ringlike band of muscle that surrounds a bodily opening, constricting and relaxing as required for normal physiological functioning. Syn: anatomical sphincter See Also: sphinx …   Wiktionary

  • sphincter — 1570s, from M.Fr. sphincter, from L.L. sphincter contractile muscle, from Gk. sphinkter band, anything that binds tight, from sphingein to squeeze, bind, of unknown origin. First used in anatomical sense by Galen …   Etymology dictionary

  • Sphincter — A sphincter is an anatomical structure, or a circular muscle, that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning. Sphincters are found in many animals; there …   Wikipedia

  • anal sphincter — noun the sphincter muscle of the anus • Syn: ↑sphincter ani, ↑musculus sphincter ani • Hypernyms: ↑sphincter, ↑anatomical sphincter, ↑sphincter muscle • Part Holonyms: ↑ …   Useful english dictionary

  • musculus sphincter ani — noun the sphincter muscle of the anus • Syn: ↑anal sphincter, ↑sphincter ani • Hypernyms: ↑sphincter, ↑anatomical sphincter, ↑sphincter muscle • Part Holonyms: ↑anus …   Useful english dictionary

  • bladder sphincter — noun the sphincter muscle of the urinary bladder; made up of a thickened muscular layer of bladder around the urethral opening • Syn: ↑musculus sphincter vesicae • Hypernyms: ↑sphincter, ↑anatomical sphincter, ↑sphincter muscle • Part Holonyms: ↑ …   Useful english dictionary

  • musculus sphincter pylori — noun the sphincter muscle of the pylorus that separates the stomach from the duodenum • Syn: ↑pyloric sphincter, ↑pyloric valve • Hypernyms: ↑sphincter, ↑anatomical sphincter, ↑sphincter muscle • Part Holonyms: ↑ …   Useful english dictionary

  • musculus sphincter urethrae — noun a striated sphincter muscle that constricts the urethra • Syn: ↑urethral sphincter • Hypernyms: ↑sphincter, ↑anatomical sphincter, ↑sphincter muscle • Part Holonyms: ↑urethra …   Useful english dictionary

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