What are the three narrowest points of the ureter?

Answers:
The pyelo-ureteral junction, the pelvic brim and the vesico-ureteral crossroads.
1) Pelviureteric junction
2) As the ureter crosses the pelvic brim
3) As the ureter passes through the bladder wall Source(s): Clinical Anatomy (Stanley Monkhouse)
At two spots close to the pelvic brim and a third at the entrance to the bladder.

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