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 ...

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 ...

An animated sequence which tours the human body, picturing and naming the major organs. The job of each organ is briefly explained. The brain, heart, lungs, stomach, liver, kidneys, intestines and ...