Joshua's Crossword Puzzle

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Across
  1. 2. Atria contact
  2. 3. Relaxation of ventricles
  3. 4. Graphic record of heart activity
  4. 5. Ventricles Contract
  5. 9. Series of "wires" (nerves) that carry the electrical impulses into the lower chambers (ventricles) through the septum
  6. 12. Blood to/from lungs
  7. 15. Blood cell formation
  8. 16. Events of one heartbeat
  9. 17. Lack of adequate blood supply to heart
  10. 19. Pacemaker of the heart
  11. 20. Contraction of ventricles
Down
  1. 1. Blood circulates inside closed transport systems
  2. 6. Distributes the impulse out to the ventricles
  3. 7. Closing of AV valves
  4. 8. Blood to/from all body tissues
  5. 10. Semilunar valves close at the end of systole
  6. 11. Peak of ventricular contraction
  7. 13. Ventricles relax
  8. 14. Uncoordinated shuddering of heart muscle, useless pump
  9. 18. Carries on the signal from the SA Node to the Bundle of His