Relations of left ureter are all EXCEPT
**Core Concept**
The left ureter is a long, narrow tube that carries urine from the kidney to the urinary bladder. It passes through various anatomical structures and is related to several important structures in the retroperitoneal space.
**Why the Correct Answer is Right**
The left ureter is related to the following structures:
• The external iliac artery and vein, which it crosses anteriorly as it descends through the pelvis.
• The obturator nerve, which it crosses anteriorly near the pelvic brim.
• The obturator internus muscle, which it passes behind at the pelvic brim.
• The sigmoid colon, which it passes behind in the lower abdomen.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not specified, so we cannot evaluate its accuracy.
**Option B:** This option is not specified, so we cannot evaluate its accuracy.
**Option C:** This option is not specified, so we cannot evaluate its accuracy.
**Option D:** This option is not specified, so we cannot evaluate its accuracy.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that the left ureter is more likely to be injured during pelvic surgery or procedures due to its close proximity to the external iliac artery and vein.
**Correct Answer:**
(A)