sphincter urethrae

sphincter urethrae
sphincter ure·thrae -yu̇-'rē-thrē n a muscle composed of fibers that arise from the inferior ramus of the ischium and that interdigitate with those from the opposite side of the body to form in the male a narrow ring of muscle around the urethra just distal to the apex of the prostate gland and in the female a ring of muscle more generally distributed around the urethra called also urethral sphincter

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urethral sphincter see musculus sphincter urethrae internus, musculus sphincter urethrae externus urethrae femininae, and musculus sphincter urethrae externus urethrae masculinae.

Medical dictionary. 2011.

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  • musculus sphincter urethrae externus urethrae masculinae — [TA] external sphincter muscle of male urethra: origin, ramus of pubis; insertion, median raphe behind and in front of urethra; innervation, perineal; action, compresses the membranous part of the urethra. Called also striated sphincter, external …   Medical dictionary

  • musculus sphincter urethrae — 1. m. sphincter urethrae externus urethrae femininae. 2. m. sphincter urethrae externus urethrae masculinae …   Medical dictionary

  • musculus sphincter urethrae membranaceae — m. sphincter urethrae externus urethrae masculinae …   Medical dictionary

  • Musculus sphincter urethrae membranaceae — Musculus urethralis Ursprung seitlich an der Vagina bzw. an der Harnröhre Ansatz Harnröhre Funktion Sphinkter der Harnröhre, Spermatransport bei der …   Deutsch Wikipedia

  • sphincter muscle of urethra — sphincter urethrae muscle see musculus sphincter urethrae externus urethrae femininae and musculus sphincter urethrae externus urethrae masculinae …   Medical dictionary

  • musculus sphincter urethrae externus urethrae femininae — [TA] external sphincter muscle of female urethra: origin, ramus of pubis; insertion, median raphe behind and in front of urethra; innervation, perineal; action, compresses the central part of the urethra. Called also striated sphincter, external… …   Medical dictionary

  • sphincter muscle of male urethra external — sphincter muscle of membranous urethra musculus sphincter urethrae externus urethrae masculinae …   Medical dictionary

  • musculus sphincter urethrae internus — [TA] internal sphincter muscle of urethra: a circular layer of smooth muscle fibers surrounding the internal urethral orifice in males, innervated by the vesical nerve, and acting to close the internal orifice of the urethra. No such structure… …   Medical 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

  • urethrae — see SPHINCTER URETHRAE …   Medical dictionary

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