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Sphincter muscle of urethra

sphincter muscle of urethra n.
A muscle with origin from the ramus of the pubis, wih insertion with its fellow muscle in the median raphe behind and in front of the urethra, with nerve supply from the pudendal nerve, and whose action constricts the membranous urethra.


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  • Sphincter muscle of urinary bladder

    sphincter muscle of urinary bladder n. A vesical sphincter made up of a thickening of the middle muscular layer of the bladder around the urethral opening. Also called sphincter muscle of urinary bladder.

  • Sphincterolysis

    sphincterolysis sphinc·ter·ol·y·sis (sfĭngk’tə-rŏl’ĭ-sĭs) n. An operation to correct anterior synechia.

  • Sphincteroplasty

    sphincteroplasty sphinc·ter·o·plas·ty (sfĭngk’tər-ə-plās’tē) n. Reparative or plastic surgery of a sphincter muscle.

  • Sphincterotomy

    sphincterotomy sphinc·ter·ot·o·my (sfĭngk’tə-rŏt’ə-mē) n. Incision into a sphincter muscle.

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