Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

To many a bright-eyed first year medical student, there’s one experience that marks a real turning point or ‘rite of passage’ into the medical field. That moment when textbook studies leave the stage, ...

The human heart is a finely-tuned instrument that serves the whole body. It is a muscular organ around the size of a closed fist, and it sits in the chest, slightly to the left of center. The ...

Keywords heart anatomy, fluorography, venous catheterization, blood flow, cardiac cycle, right atrium, left atrium, coronary arteries, selective opacification, physiological data Email us at ...

The heart is a muscular organ made up mostly of cardiac muscle, which is specific to the heart. The function of the heart is to pump blood to the rest of the body, so it's very important to keep ...

Zygote Body shows the circulatory system—and other parts of human anatomy—in exquisite detail. Zygote Body is an amazing 3D simulation of the human body, complete with every layer, organ, and ...

The heart is the hardest-working muscle. It pumps out 2 ounces (57 grams) of blood with every heartbeat. Daily, the heart pumps at least 2,500 gallons (9,464 liters) of blood.