This clip is an introduction to the human heart. We find out about ... The heart takes in blood low in oxygen from the body. It pumps it through the right side of the heart and on to the lungs.

Put your hand on your heart. Did you place your hand on the left side of your chest ... ten of them to equal the thickness of a human hair. Your body has about 5.6 liters (6 quarts) of blood.

It also shows how the pacemaker cells restart her heart after the surgery. This short film is from the BBC series, Inside the Human Body. The 3D footage brings the topic to life and would enhance ...