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
Left ovarian vein drains into 
Select and explain. 
A. Left renal vein, B. Internal iliac vein, C. Inferior vena cava, D. Azygos vein
A: Left renal vein
Answer: A: Left renal vein 
Explanation: Ovarian veins crosses the ureter anteromedially halfway between bifurcation of the IVC and the point in which it joins the anterolateral inferior vena cava (IVC). The left ovarian vein ascends similarly into the abdomen but drains into the left renal vein. ref - BDC 6e vol2 pg384