Function

The Heart: About the size of two adult hands held together, the heart rests near the center of the chest.

Blood: It transports hormones, nutrients, oxygen, antibodies, and other important things needed to keep the body healthy.

Arteries: Carry oxygen-rich blood away from the heart to the rest of the body (away).

Veins: Carry deoxygenated blood to the lungs where they receive oxygen.