This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
The narrowest pa of the ureter is at the 
Select and explain. 
A. Uretero - pelvic junction, B. Illiac vessel crossing, C. Pelvic uterer, D. Uretero - vesical junction
D: Uretero - vesical junction
Answer: D: Uretero - vesical junction 
Explanation: Ureterovesical junction is the anatomical position where the ureters join the urinary bladder. This is the narrowest of the ureter. Ureters are surrounded by the valves called as ureterovesical valve which will prevent the vesicoureteral reflux. Ref - urologyhealth.org