What Are The 4 Main Parts Of The Circulatory System?
What Are The 4 Main Parts Of The Circulatory System? The circulatory system is composed of the heart, arteries, capillaries, and veins. This remarkable system transports oxygenated blood from the lungs and heart throughout the body via the arteries. What are the 5 major parts of the circulatory system? Blood. Blood consists of: The heart.