The Circulatory System - The Heart

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  • Created by: Han2812
  • Created on: 06-04-13 12:53

The Circulatory System - The Heart

The heart is the main organ in the blood circulatory sytem. It contracts to pump blood around the body.

1) Its made of muscle tissue - is a muscle

2) It has valves that make sure the blood goes the right way - doesnt go backwards. They are between…

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