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 ...

Locate the vessels entering and leaving the heart and the 2 heart chambers - atrium and ventricle. Look at diagram of blood flow through the heart - Figure 10.9 on page 97 of lab manual. Next, follow ...

The semilunar valves stop the back flow of blood into the heart. There is a semilunar valve where the aorta leaves the left ventricle and another where the pulmonary artery leaves the right ventricle.

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 ...

Then, during relaxation (diastole), the aorta recoils, releasing the stored energy and helping maintain blood flow. This wave-pumping effect works in tandem with the heart’s pumping mechanism ...

Blood flow restriction training (or BFR ... Veins carry deoxygenated blood from the tissue to the heart. When the veins are blocked, old blood cannot escape, and new, oxygenated blood brought ...

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 ...

If you clench your hand into a fist, this is approximately the same size as your heart. It is located in the middle of the chest and slightly towards the left. The heart is a large muscular pump ...