The IVC is formed by the junction of which veins?

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Multiple Choice

The IVC is formed by the junction of which veins?

Explanation:
The big idea is that the inferior vena cava is formed by the union of the two common iliac veins. Each common iliac vein itself is formed by the merging of the internal and external iliac veins in the pelvis; when the right and left common iliac veins come together around the level of the fifth lumbar vertebra, the inferior vena cava begins. From there it ascends on the right side of the spine, receiving tributaries such as the renal and hepatic veins as it travels toward the heart. The renal veins drain kidneys into the IVC, the hepatic veins drain the liver into the IVC, and the splenic vein is part of the portal venous system, not involved in forming the IVC.

The big idea is that the inferior vena cava is formed by the union of the two common iliac veins. Each common iliac vein itself is formed by the merging of the internal and external iliac veins in the pelvis; when the right and left common iliac veins come together around the level of the fifth lumbar vertebra, the inferior vena cava begins. From there it ascends on the right side of the spine, receiving tributaries such as the renal and hepatic veins as it travels toward the heart. The renal veins drain kidneys into the IVC, the hepatic veins drain the liver into the IVC, and the splenic vein is part of the portal venous system, not involved in forming the IVC.

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