AP BIOLOGY

Detailed explanation-1: -But pulmonary artery is the only artery which carries impure or deoxygenated blood and pulmonary vein carries impure blood.

Detailed explanation-2: -Your pulmonary arteries carry blood from your heart to your lungs. They’re the only arteries in your body that carry oxygen-poor (deoxygenated) blood. Your main pulmonary artery (pulmonary trunk) leaves your right ventricle at your pulmonary valve.

Detailed explanation-3: -The pulmonary artery carries deoxygenated blood from the heart to the lungs.

Detailed explanation-4: -So, pulmonary artery receives deoxygenated blood from right side of heart. This is nature’s design that this blood enters lungs for unloading of carbondioxide and subsequent loading of oxygen can take place. It is true that other than pulmonary artery, all arteries carry oxygenated blood.