external anal sphincter

external anal sphincter n ANAL SPHINCTER (a)

Medical dictionary. 2011.

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  • external anal sphincter — noun see anal sphincter …   Useful english dictionary

  • anal sphincter — n either of two sphincters controlling the closing of the anus: a) an outer sphincter of striated muscle extending from the coccyx to the central tendinous part of the perineum and surrounding the anus immediately beneath the skin called also… …   Medical dictionary

  • 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

  • anal sphincter external — musculus sphincter ani externus …   Medical dictionary

  • Sphincter ani externus muscle — Muscle infobox Name = Sphincter ani externus muscle Latin = musculus sphincter ani externus GraySubject = 120 GrayPage = 425 Caption = Caption2 = Coronal section through the anal canal. B. Cavity of urinary bladder V.D. Ductus deferens. S.V.… …   Wikipedia

  • 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 wink — The anal wink, anal reflex, perineal reflex, or anocutaneous reflex is the reflexive contraction of the external anal sphincter upon stroking of the skin around the anus.A noxious or tactile stimulus will cause a wink contraction of the anal… …   Wikipedia

  • Anal sex — This article is about the human sexual act. For anal sex in non human animals, see Animal sexual behaviour. Depiction of anal sex on 510 BC Attic red figure …   Wikipedia

  • sphincter — A muscle that encircles a duct, tube, or orifice in such a way that its contraction constricts the lumen or orifice. SYN: musculus s. [TA], s. muscle [TA]. [G. sphinkter, a band or lace] s. of ampulla s. of hepatopancreatic ampulla. anatomic s.… …   Medical dictionary

  • Anal fissure — Infobox Disease Name = PAGENAME Caption = DiseasesDB = 673 ICD10 = ICD10|K|60|0|k|55 ICD10|K|60|2|k|55 ICD9 = ICD9|565.0 ICDO = OMIM = MedlinePlus = 001130 eMedicineSubj = med eMedicineTopic = 3532 eMedicine mult = eMedicine2|ped|2938… …   Wikipedia

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