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 ...

The film presents a detailed fluorographic study of the normal heart using venous catheterization, showcasing physiological data such as pressure and flow measurements. It illustrates blood flow ...

Oxygen-poor blood (shown in blue) flows from the body into the right atrium ... ventricle. The left ventricle pumps the oxygen-rich blood to all parts of the body. amazing heart facts.