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 ...

Exercise doesn’t just wake up your body; it also energizes your mind. In the first few minutes, your brain becomes activated ...

The valves prevent the blood flowing backwards. The heart is relaxed and blood flows into both sides from the veins. The right and left atrium contract. Blood is forced into the right and left ...

Medically reviewed by Rafle Fernandez, MD Valvular heart disease, sometimes called heart valve disease, is when one or more ...

Your surgeon will make an incision in your chest to access your heart and will use a machine to take over blood flow while your heart is temporarily stopped. In some cases, minimally invasive ...

Men who currently use or have a history of using anabolic androgenic steroids exhibit impaired myocardial flow reserve, indicating coronary microvascular dysfunction. This impairment appears to ...

In order to get blood to the heart muscle ... stitch them into the vascular network supplying the heart muscle — re-routing the blood-flow around the blockage. This is called a graft.

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 ...