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 ...

February is American Heart Month, and knowing your blood pressure is a big part of staying healthy. Blood pressure tells a ...

The ancient Greek philosopher and polymath Aristotle once concluded that the human heart is tri-chambered and that it was the ...

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 right-hand side of the heart is responsible for pumping deoxygenated blood to the lungs. The left-hand side pumps oxygenated blood around the body. Each side of the heart consists of an atrium ...

The right-hand side of the heart is responsible for pumping deoxygenated blood to the lungs. The left-hand side pumps oxygenated blood around the body. Each side of the heart consists of an atrium ...

The ancient Greek philosopher and polymath Aristotle once concluded that the human heart is tri-chambered and that it was the ...

It contracts and releases involuntarily and keeps the heart pumping blood around the body. The human body contains three kinds of muscle tissue: skeletal, smooth, and cardiac. Only cardiac muscle ...

The treated hearts' efficiency at pumping blood, which is the main measure of the severity of heart failure, increased over time—not to fully healthy levels, but close to that of healthy hearts.