Cardiovascular Crossword

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Across
  1. 6. Rapid heart rate
  2. 7. Decrease in oxygen carrying ability of blood
  3. 9. Semilunar valves close at endof systole
  4. 10. Contract spontaneously and independently
  5. 11. Blood cell formation
  6. 15. Lack of adequate blood supply to heart
  7. 16. Clogged coronary vessels
  8. 18. Distributes the impulse out of the ventricles
  9. 20. Prolonged angina heart cells may die
Down
  1. 1. Abnormal or unusual heat sounds
  2. 2. Volume of blood pumped out by one ventricle with each beat
  3. 3. Very slow heartbeat
  4. 4. Atria contact
  5. 5. Iron-containing protein, binds to O2
  6. 8. Graphic record of heart activity
  7. 12. Ventricles relax
  8. 13. Ventricles contract
  9. 14. Sinoatrial node pacemaker of the heart
  10. 17. Closing of av valves
  11. 19. Uncoordinated shuddering of heart attacks