Body Fluids and Circulation · Question 73

Difference between pulmonary artery and pulmonary vein is that, the pulmonary artery has

1. no endothelium
2. valves
3. thicker walls
4. oxygenated blood

Answer

(3) thicker walls

Solution

The pulmonary artery carries blood from the right ventricle to the lungs under high pressure.

⇒ Like all arteries it has a thick, muscular and elastic wall, while the pulmonary vein has a thinner wall.

Both have an endothelium; the pulmonary artery carries deoxygenated blood, and valves are a feature of veins.

Answer: (3)