The Heart Key Terms

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Across
  1. 3. small chambers in the heart that pump blood into the ventricles
  2. 5. a device used to correct heart fibrillation
  3. 6. large chambers in the heart that pump blood into the arteries
  4. 7. to do with the lungs
  5. 8. stops the backflow of blood
  6. 10. the main artery that takes blood to the whole body
  7. 11. the human circulatory system has two loops this is known as
Down
  1. 1. the main vein that returns blood from the body to the heart
  2. 2. the valve separating the right atrium and ventricle
  3. 4. irregular beating of the heart
  4. 7. the bundle of nerves that regulates the heartbeat
  5. 9. the wall that divides the two sides of the heart