EVERYDAY SCIENCE

Detailed explanation-1: -The Deoxygenated blood from the various parts of the body returns to the right half of the heart, via the vena cava. This deoxygenated blood is carried to the lungs for oxygenation through the pulmonary artery. It is then pumped to the heart via the pulmonary vein for circulation to various tissues.

Detailed explanation-2: -Arteries carry blood away from the heart, and veins carry blood towards the heart. With the exception of pulmonary blood vessels, arteries carry oxygenated blood and veins carry deoxygenated blood.

Detailed explanation-3: -Veins are the blood vessels that conduct blood from different body parts back to the heart. All veins are carried deoxygenated blood except the pulmonary vein which carries oxygenated blood from the lungs to the left atrium of the heart.

Detailed explanation-4: -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. These two are exceptions.

Detailed explanation-5: -A common misconception is that veins always carry deoxygenated blood. Veins always return blood to the heart, but the pulmonary veins are bringing oxygenated blood back to the heart so that it may be pumped to the body’s tissues. Deoxygenated blood travels through the right ventricle to the pulmonary arteries.