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urethral sphincter

   Also found in: Dictionary/thesaurus, Wikipedia 0.03 sec.
urethral sphincter,
the voluntary muscle at the neck of the bladder that relaxes to allow urination.


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Collagen has been used to treat SUI because its injection into the tissue surrounding the urethra tightens the urethral sphincter, and stops urine from leaking.
Stress, defined as urethral sphincter failure, usually associated with increased intraabdominal pressure.
In patients with intrinsic sphincter deficiency, the intrinsic urethral sphincter mechanism and/or its nerve supply are damaged and therefore cannot maintain an adequate urethral tone when stress activities increase abdominal pressure.
 
 
 
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