This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen & Pelvis, Subject name: Anatomy
[{'content': 'Left gonadal vein drain into: \nSelect and explain. \nA. Left renal vein, B. Right renal vein, C. Inferior vena cava, D. Pampiniform plexus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A Left renal veinRef: BDC, Vol. II pg. 236 VENOUS DRAINAGE OF TESTIS* The veins emerging from the testis form the pampiniform plexus.* Out of this plexus finally one vein forms in each side:# On the right side: Drains into the inferior vena cava# On the left side: Drains into the left renal vein.* Femoral vein drains into external iliac vein.Remember: IVC is on right side, so the right side testicular vein drains here"And left side testicular vein drains into left renal vein.', 'role': 'assistant'}]