NEET 2000 Biology question

In which point pulmonary artery is different from pulmonary vein :

(1)Its lumen is broad
(2)Its wall is thickCorrect
(3)It have valves
(4)It does not possess endothelium

Answer: (2)

Solution

The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs under higher pressure, so like all arteries it has a thick, muscular and elastic wall and a relatively narrow lumen. The pulmonary vein carries oxygenated blood from the lungs to the left atrium under low pressure, so it has a thin

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Question ID VK-088661