Multiple choice

Which of the following carries oxygenated blood?

  1. Renal vein

  2. Hepatic portal vein

  3. Pulmonary artery

  4. Pulmonary vein
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pulmonary vein uniquely carries oxygenated blood from the lungs to the left atrium. All other options carry deoxygenated blood: renal vein (A) from kidneys, hepatic portal vein (B) from GI tract to liver, and pulmonary artery (C) from heart to lungs.

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