EVERYDAY SCIENCE

Detailed explanation-1: -Your pulmonary veins are the only veins in your body that carry oxygen-rich blood. All your other veins carry oxygen-poor blood. Similarly, your pulmonary arteries are the only arteries that carry oxygen-poor blood. All the rest of your arteries carry oxygen-rich blood.

Detailed explanation-2: -Hint: Pulmonary veins are responsible for carrying oxygenated blood from the lungs when blood is purified in the lungs towards the heart whereas on other hand pulmonary arteries carry deoxygenated blood from the heart towards the lungs for their oxygenation or purification.

Detailed explanation-3: -The pulmonary veins carry oxygenated blood from the lungs to the left atrium of the heart.

Detailed explanation-4: -Most veins usually carry deoxygenated blood from tissues back to the heart but exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. Oxygenated blood from the lungs is circulated back to the heart through the pulmonary veins that drain into the left atrium.