Cardiovascular Crossword

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Across
  1. 3. muscular middle layer of heart
  2. 5. largest vein
  3. 8. contraction part of heartbeat
  4. 11. largest artery
  5. 12. beat of a heart, felt through wall of arteries
  6. 13. one of the hearts upper chambers
  7. 14. abnormal swishing sound
  8. 15. one of the hearts lower chambers
Down
  1. 1. measures blood pressure
  2. 2. nervous tissue in right atrium; begins heartbeat
  3. 4. relaxation part of the heartbeat
  4. 6. smallest type of blood vessel
  5. 7. small vein
  6. 9. double-layer membrane surrounding heart
  7. 10. wall dividing cavity between right and left atria
  8. 11. small artery