Ureteric constriction is seen at all the following positions, EXCEPT:: (A) Ureteropelvic junction, (B) Ureterovesical junction, (C) Crossing of iliac aery, (D) Ischial spine
Answer is D. Each ureter measures about 10 in. (25 cm) long and resembles the esophagus (also 10 in. long) in having three constrictions along its course. The sites of ureteric constrictions include: where the renal pelvis joins the ureter, where it is kinked as it crosses the pelvic brim, and where it pierces the bladder wall.Ref: Richard S Snell's Clinical Anatomy for Medical Students, 6th Edition, Pages 236, 273