Multiple choice

_______ carries away the clean blood from the kidneys.

  1. Renal vein

  2. Pulmonary vein

  3. Aorta

  4. Renal artery

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A Correct answer
Explanation

The renal vein carries filtered (clean) blood away from the kidney back toward the heart via the inferior vena cava. The renal artery is the vessel that brings unfiltered blood into the kidney. Pulmonary vessels are associated with the lungs, and the aorta is the main systemic artery.

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