Assertion: urethra's sphincter | /r/LocatedNear | membranous urethra
Facets:
Source sentences:
text: The external sphincter surrounds the membranous urethra.
text: The prostate and a sphincter that surrounds the membranous urethra (external sphincter) are not seen on a this X-ray, and are illustrated to show where they are located.
text: Dissection of prostate showing the fibers of the external sphincter surrounding the membranous urethra and partially cradling the inferior portion of the prostate.