The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, responsible for transporting nutrients and waste throughout the body.

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 ...

Human circulatory and digestive system ... short film uses 3D CGI images to show the movement of blood through the chambers of the heart and also the pacemaker cells. How humans heal themselves.

When the significance of the human circulatory system was finally established ... from the periphery toward the heart. Hence, he concluded, blood had to return to the heart. What clinched the ...

the human heart will beat more than 2.5 billion times. Give a tennis ball a good, hard squeeze. You're using about the same amount of force your heart uses to pump blood out to the body.

As your heart expands, blood flows from your body into its ... of a blind climber who uses his tongue to see is shown. Human circulation. video Human circulation This short film takes us on ...