Cardiovascular Crossword

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Across
  1. 4. Blood circulation from the Heart to Lungs to Heart
  2. 5. Muscular middle layer of the heart
  3. 7. The thickest of the four walls of the heart
  4. 11. Relaxation phase of the heartbeat
  5. 15. The largest single artery in the body
  6. 16. Device used to measure blood pressure
Down
  1. 1. Fibrous sac surrounding the heart
  2. 2. The beat of your heart
  3. 3. Contraction phase of the heartbeat
  4. 6. One endothelial cell in thickness
  5. 8. Interior layer of the heart
  6. 9. Artery that supplies blood to the head and neck
  7. 10. Exhaled waste product from the blood
  8. 12. Carries blood away from the heart
  9. 13. Carries blood back to the heart
  10. 14. Abnormal swishing sound of the heart
  11. 17. One of two upper chambers of the heart