urethral sphincter

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Noun1.urethral sphincter - a striated sphincter muscle that constricts the urethra
urethra - duct through which urine is discharged in most mammals and which serves as the male genital duct
anatomical sphincter, sphincter, sphincter muscle - a ring of muscle that contracts to close an opening
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References in periodicals archive ?
Temporary urinary retention may occur due to urethral swelling, over-injection of bulking material, or urethral sphincter spasms.
It usually occurs due to inadequate function of the external urethral sphincter, so the condition is referred to as urethral sphincter mechanism incompetence (USMI).
These materials are applied to increase tissue volume within the proximal urethral wall between the bladder neck and the external urethral sphincter. Increasing tissue volume at these locations increases urethral luminal coaptation and bladder outflow resistance (32).
(15) published that SUI after RP results from the shortening of anatomical and functional sphincter length due to postoperative prolapse of the urethral sphincter complex.
The physiological voiding process involved the smooth muscles of bladder and the internal and external urethral sphincter. Nerve fibers responsible for vesical sphicter competence are is located close to the trigone (BAINES et al., 2001; BERNADE & VIGUIER, 2004; FOSSUM, 2005; PHILLIPS & HOLT, 2006).
The mass was not involved with the urethral sphincter, and the reconstruction was done by careful approximation of defect.
The urodynamic study code 51784, Electromyography studies (EMG) of anal or urethral sphincter, other than needle, any technique, has decreased in RVU value by about 64%.
Similarly, another study has shown some difference to exist not only in the arrangement but also in the innervation of smooth muscles in males and females in the proximal urethra and showing the presence of a proximal pre-prostatic urethral sphincter in males.11,12
In addition, a higher concentration of 5-HT at the neuromuscular junction leads to constriction of the external urethral sphincter.
The urethral sphincter mechanism is composed of an external striated sphincter and an internal smooth muscle layer that are both crucial to maintaining urethral closure pressure.