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The Human Pump

25 minutes

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Color illustration of the human cardiovascular system, showing the heart, arteries, and veins in the chest area.

Blood, river of life and garbage collector of the body's cells, is pumped around the body in less than a minute by the heart. Discusses the composition of both blood and the heart. Microphotography offers a detailed view of the pumping heart and the circulatory system.

Media Details

Runtime: 25 minutes

Shirtless muscular man flexing his bicep. Caption: When the muscle fibers fire and contract,
27 minutes 11 seconds
Grade Level: 6 - 10
Illustration of a vein blocked by a fatty substance. Caption: then what happens in a stroke or heart attack.
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Grade Level: 4 - 8
Illustration of the heart and lungs with the vascular system highlighted. Caption: Blood is pumped through a vast network of tubes
19 minutes 37 seconds
Grade Level: 5 - 9
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