Video
The Heart’s Purpose and Function
As you read this, your heart is pumping about five quarts of blood throughout your body.
The blood is traveling through more than 60,000 miles of blood vessels (arteries, veins, capillaries). That’s enough to circle the equator twice, and then some! A heart works tirelessly over a lifetime. During an average life, the heart beats 3 billion times without a single break. Not bad for a muscle the size of a fist and lighter than a couple of baseballs.
