Does the heart have an actual blood pump?

Answer by  mgoodman (204)

No the heart functions by accepting deoxygenated blood from the body in the right upper chamber, or atrium. It squeezes it to the right ventricle, the lower chamber. Blood picks up oxygen from the lungs, and the left ventricle squeezes the most to force the blood out the left upper atrium, headed out to oxygenate tissues throughout the body.

Answer by  wyeth (435)

The heart is a four chamber pump with four one way valves.Venous low oxygen blood from the body enters the right atrial chamber and then the right ventricular chamber which pumps it through the lungs to pick up oxygen and back through the left two chambers to the body's arteries.

Answer by  Kisha (116)

The heart itself is a muscle. The heart contracts and therefore causes the blood to pump in and out where it needs to go.

Answer by  Bri88 (5)

The heart is a very strong, durable muscle that pumps blood throughout the body. It contracts several times a minute to pump blood