external urethral sphincter


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ex·ter·nal u·re·thral sphinc·ter

[TA]
muscle that constricts membranous urethra to retain urine in bladder; nerve supply, pudendal.
References in periodicals archive ?
A new theory of the innervation of bladder musculature: innervation of the vesicourethral junction and external urethral sphincter.
Voiding dysfunction after radical retropubic prostatectomy: more than external urethral sphincter deficiency.
By increasing neurotransmitter concentration, duloxetine is believed to increase the tone and contraction of the external urethral sphincter,(9) which helps prevent accidental urine leakage during physical activities such as sneezing, coughing, laughing, lifting or exercise.
Duloxetine, by inhibiting this reuptake in the sacral spinal cord, increases neurotransmitter concentration resulting in increased activity of the nerve that in turn stimulates the external urethral sphincter.

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