What is the function of the vena cava?

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Multiple Choice

What is the function of the vena cava?

Explanation:
Returning blood to the heart is what the vena cava does. The superior vena cava collects deoxygenated blood from the upper body (head, neck, arms) and the inferior vena cava does the same for the lower body (abdomen, legs). Both drain into the right atrium, providing the heart with blood that will move to the right ventricle and then to the lungs for oxygenation. It’s not about delivering oxygenated blood to the left ventricle, pumping blood to the lungs directly, or filtering blood—those are different parts of the circulation. So the function is to deliver deoxygenated blood to the right atrium.

Returning blood to the heart is what the vena cava does. The superior vena cava collects deoxygenated blood from the upper body (head, neck, arms) and the inferior vena cava does the same for the lower body (abdomen, legs). Both drain into the right atrium, providing the heart with blood that will move to the right ventricle and then to the lungs for oxygenation. It’s not about delivering oxygenated blood to the left ventricle, pumping blood to the lungs directly, or filtering blood—those are different parts of the circulation. So the function is to deliver deoxygenated blood to the right atrium.

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