Synopsis
Great animations of circulatory stuff. Closeups of blood moving. Boys play wrestle! Describes the need of the body cells for food and oxygen, for the disposal of waste products and for rest and excercise. Shows how blood returns from the capillaries to the heart through the venous system and how the chambers of the heart pump the blood through the arterial system to the capillaries.
Uploader's description on archive.org
Details
- Running time
- 9 minutes