The four valves of the heart allow blood to flow through the heart in the right direction. The valves open or close each time the heart beats. Problems with the heart valves can lead to ...

Specifically, the researchers found that neurons below the skull send signals from the heart to the brain that trigger a drop in heart rate, blood pressure and breathing rate. That, in turn, may ...

Learn How the Heart Works. Your heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and ...

Plaque is what leads to heart attacks and blockage of blood flow in the arteries. Understand the conditions that affect your heart and the habits that can help prevent or manage them.

There are 4 valves in the heart to ensure blood flows in the right direction. If the valves do not work correctly, blood can leak backward. Learn more about the different types of leaky valves here.