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Question

The only vein that carries oxygenated blood is:

  1. Pulmonary vein
  2. Cystic vein
  3. Cardiac vein
  4. Hepatic Portal vein

Answer:

Option A: Pulmonary vein

Detailed Solution:

The correct answer is “Pulmonary vein”.

The pulmonary vein is the only vein in the human body that carries oxygenated blood. It transports oxygen-rich blood from the lungs to the left atrium of the heart, in contrast to other veins that typically carry deoxygenated blood back to the heart.