MICROANATOMY

Detailed explanation-1: -Generally an artery carries oxygenated or pure blood in the body and veins carry deoxygenated or impure blood. But pulmonary artery is the only artery which carries impure or deoxygenated blood and pulmonary vein carries impure blood.

Detailed explanation-2: -All veins are carried deoxygenated blood except the pulmonary vein which carries oxygenated blood from the lungs to the left atrium of the heart. Small vessels are called venules that continue from capillaries, merge to form veins, and drain the blood from capillaries into veins.

Detailed explanation-3: -The pulmonary veins transport oxygenated blood back to the heart from the lungs, while the pulmonary arteries move deoxygenated blood from the heart to the lungs.)

Detailed explanation-4: -The aorta carries oxygen-rich blood to the body from the left ventricle.