Where do the left gonadal veins drain?

Where do the left gonadal veins drain?

• A. Inferior vena cava
• B. Left renal vein
• C. Hepatic portal vein
• D. Superior vena cava

Answer: (B)

Blood from the left gonad drains into the left renal vein, which then empties into the inferior vena cava. This left-sided pattern places the gonadal venous drainage into the renal venous system before joining the IVC, whereas the hepatic portal vein handles blood from the GI tract to the liver and the superior vena cava collects blood from the upper body. So the route is via the left renal vein and then into the IVC.

Blood from the left gonad drains into the left renal vein, which then empties into the inferior vena cava. This left-sided pattern places the gonadal venous drainage into the renal venous system before joining the IVC, whereas the hepatic portal vein handles blood from the GI tract to the liver and the superior vena cava collects blood from the upper body. So the route is via the left renal vein and then into the IVC.