Day and night, the muscles of your heart contract and relax to pump blood throughout your body. When blood returns to the heart, it follows a complicated pathway. If you were in the bloodstream ...

When your heart can’t pump blood efficiently, it affects every part of your body in ways you may not expect. Know the signs of worsening heart failure.

As your heart beats, it pumps blood from the left ventricle through the aortic valve and into the aorta, your body’s largest artery. The aortic valve is made up of three triangular flaps of ...

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 ...