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The Heart Beat- Answers |
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- What is the name of the group of cells which initiate the heart beat?
- The period where the heart is at rest is called what?
- What happens during the p wave?
- The SA node fires so the atria contract, forcing blood into the ventricles
- What is the job of the AV node?
- To spread the impulse throughout the walls of the ventricles
- In which two parts of the cycle are the ventricles in systole?
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