The four valves of the heart prevent blood from flowing in the wrong direction, and open or close each time the heart beats. Learn more about them, here.

The heart is a complex organ that pumps blood throughout the body. It sits in the chest, slightly left of center, behind the breastbone, and between the lungs. A heart that is not healthy does not ...

Find it in your heart…to pay attention to these symptoms. Heart attacks are most common in people 65 and older, but that doesn’t mean you’re in the clear until you reach retirement age.

Weill Cornell Medicine researchers have determined the full-length structure of a blood pressure-regulating hormone receptor for the first time, uncovering how it functions, which may enable ...

For example, heart failure reduces the response of the parasympathetic nervous system. The results can be an increased heart rate, which is the body’s way of trying to improve the amount of ...