cardiovascular crossword

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Across
  1. 3. prevent the backflow of blood
  2. 7. death of heart muscle
  3. 8. recording of electricity through the heart
  4. 11. supply blood to head and neck
  5. 12. carbon dioxide
  6. 13. walls of the heart
  7. 14. inflammation of the pericardium surrounding the heart
  8. 15. acute myocardial infarction
Down
  1. 1. Abnormal swishing sound of the heart
  2. 2. abnormal heart rhythms
  3. 4. chest pain
  4. 5. Lower tip of the heart
  5. 6. Relaxation phase of heartbeat
  6. 9. inflammation of the inner lining of the heart
  7. 10. Contraction phase of the heartbeat