What Are Veins and Arteries?

Veins and Arteries

Say: vayns, AR-tuh-reez

Your body has a "highway" system that sends blood to and from your body parts. It's called the circulatory system and the roads are called arteries and veins. Arteries, which usually look red, carry blood away from the heart. Veins, which usually look blue, return blood to the heart.