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 ...

As we approach Valentine’s Day, a time traditionally dedicated to love and connection, it’s essential to pause and reflect on ...

These tireless cells, called pacemakers, which control the beat of your heart, came into being. They spontaneously ... Inside the Human Body. The 3D footage brings the topic to life and would ...

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 ...