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 ...

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 ...

In mammals the heart is a double pump. The right side pumps deoxygenated blood to the lungs and the left side pumps oxygenated blood to the rest of the body tissues. This means that a red blood ...

If you clench your hand into a fist, this is approximately the same size as your heart. It is located in the middle of the chest and slightly towards the left. The heart is a large muscular pump ...

The common artificial sweetener aspartame could be putting consumers at greater risk of heart disease through a newly discovered chemical trigger on the lining of arteries.

"After you eat a meal, it's been shown that your heart rate and blood pressure actually are increasing," said Micah Yoder, a graduate student in the lab of Jonathan Kirk at Loyola University Chicago.