Pulmonary artery is different from pulmonary vein because it has
Pulmonary artery is different from pulmonary vein because it has
(a) larger lumen
(b) thick muscular walls
(c) no endothelium
(d) valves
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Correct Option (b) thick muscular walls
Explanation:
Arteries have thick walls, narrow lumen but no valves. Endothelium is present in both arteries and veins.
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