Originally appeared on the NOVA Web site Cut to the Heart. Let's get straight to the heart of the matter—the heart's job is to move blood. Day and night, the muscles of your heart contract and ...

The heart, a powerful muscle with four chambers, pumps oxygen-rich blood to the body and receives carbon dioxide-laden blood for oxygenation in the lungs. Blood flows through arteries and veins ...

As your heart expands, blood flows from your body into its chambers ... This short film is from the BBC series, Inside the Human Body. The 3D footage brings the topic to life and would enhance ...

If we scrutinize the mechanism of the heart, we shall find that it ... at the mouth of the aorta to force the blood through the vessels of the human body, is estimated by Hales, as being equal ...

The agency OK’d an artificial vessel to restore blood flow in patients, even though its own scientists flagged questionable study results and potentially fatal ruptures of the product.

Heart attacks occur when the heart muscle is damaged by reduced blood flow from one or more arteries ... By performing laboratory experiments on human tissue samples, the investigators first ...

Let's get straight to the heart of the matter—the heart's job is to move blood. Day and night, the muscles of your heart contract and relax to pump blood throughout your body. When blood returns ...