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All the veins in the human circulatory system carry blood towards the heart. What is the difference between a pulmonary vein and other veins?
Question

All the veins in the human circulatory system carry blood towards the heart. What is the difference between a pulmonary vein and other veins?

A.

Pulmonary vein carries oxygenated blood

B.

Pulmonary vein has a small lumen

C.

Pulmonary vein has no valves

D.

Blood flows with pressure in the pulmonary vein

Correct option is A

The correct answer is:(A) Pulmonary vein carries oxygenated blood

The pulmonary vein differs from other veins because it carries oxygenated blood from the lungs to the heart, while all other veins typically carry deoxygenated blood back to the heart.

Pulmonary Vein:
Carries oxygen-rich (oxygenated) blood.
Transports blood from the lungs to the left atrium of the heart.
Plays a key role in oxygenating the body by delivering freshly oxygenated blood for circulation.
Other Veins:
  • Carry oxygen-poor (deoxygenated) blood.
  • Transport blood from various parts of the body back to the right atrium of the heart.
  • Examples: Superior vena cava, Inferior vena cava.

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