Assertion: ureter | /r/LocatedNear | valve
Facets:
value: at the entrance to the bladder
type: LOCATION
Source sentences:
text: At the entrance to the bladder, the ureters are surrounded by valves known as ureterovesical valves, which prevent vesicoureteral reflux (backflow of urine).[citation needed]
text: At the entrance to the bladder, the ureters are surrounded by valves known as ureterovesical valves, which prevent vesicoureteral reflux (backflow of urine).[citation needed]