Madison Thatcher Unit 4

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Across
  1. 4. muscle of the heart
  2. 5. carry blood away from the heart
  3. 8. where blood enters the heart from the lungs
  4. 10. opening where blood flows between the right atrium and the right ventricle
  5. 11. electrocardiogram
  6. 15. blood vessel in which the deoxygenated blood flows to the lungs
  7. 16. atrioventricular node
  8. 17. when the charges return to a resting state
  9. 19. first chamber of the heart where deoxygenated blood flows through
  10. 20. opening in blood vessels
  11. 21. represents oxygen in blood on an EKG
Down
  1. 1. where gas exchange takes place
  2. 2. cut in top and bottom halves
  3. 3. carry blood to the heart
  4. 6. complete cycle of pumping and filling
  5. 7. sinoatrial node
  6. 9. where all the deoxygenated blood from the upper body goes to the heart
  7. 12. innermost layer of blood vessels
  8. 13. pulse from the neck
  9. 14. pulse from wrist
  10. 18. main artery of the body