external urethral sphincter

Also found in: Acronyms.

ex·ter·nal u·re·thral sphinc·ter

muscle that constricts membranous urethra to retain urine in bladder; nerve supply, pudendal.
References in periodicals archive ?
Effects of two atypical neuroleptics, olanzapine and risperidone, on the function of the urinary bladder and the external urethral sphincter in anesthetized rats.
These devices, however, use the patients' own external urethral sphincter for urinary control rather than a valve mechanism.
Post-prostatectomy urinary incontinence (PPUI) is usually due to direct damage to the external urethral sphincter.

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