sphincter muscle of anus external

sphincter muscle of anus external
musculus sphincter ani externus.

Medical dictionary. 2011.

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  • 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

  • Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …   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 ani internus muscle — Muscle infobox Name = Sphincter ani internus muscle Latin = musculus sphincter ani internus GraySubject = 120 GrayPage = 426 Caption = Coronal section through the anal canal. B. Cavity of urinary bladder V.D. Ductus deferens. S.V. Seminal vesicle …   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

  • Human anus — The human Anus (from Latin ānus ring (circle)cite book | last = Martim de Albuquerque | first = | title = Notes and Queries | publisher = Oxford University Press | date= 1873 | location = Original from the University of Michigan | pages = Page… …   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

  • Superficial transverse perineal muscle — Infobox Muscle Name = PAGENAME Latin = musculus transversus perinei superficialis GraySubject = 120 GrayPage = 427 Caption = Median sagittal section of pelvis, showing arrangement of fasciæ. (Transversus perinei superficialis visible at bottom… …   Wikipedia

  • Corrugator cutis ani muscle — Gray s subject #120 425 Origin Insertion    …   Wikipedia

  • 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

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