EVERYDAY SCIENCE

Detailed explanation-1: -Arteries carry blood away from the heart and veins carry blood back to the heart.

Detailed explanation-2: -A large vein that carries blood to the heart from other areas of the body. The vena cava has two parts: the superior vena cava and the inferior vena cava.

Detailed explanation-3: -A network of arteries and veins also carry blood throughout the body: Arteries transport blood from the heart to the body tissues. Veins carry blood back to the heart.

Detailed explanation-4: -The veins take oxygen-poor blood back to the heart. Hence, the correct option is (b).

Detailed explanation-5: -Veins carry deoxygenated blood towards your heart and are often located close to your skin. Veins don’t have a muscular layer like arteries do, so they rely on valves to keep your blood moving. Veins start as tiny blood vessels called venules, which become full-size veins as they come closer to your heart.