Cardiovascular CW Puzzle

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Across
  1. 4. arteries vessels branch from aorta and feed heart muscle
  2. 6. smallest blood vessel
  3. 8. small vein
  4. 10. partition or wall dividing atria of heart
  5. 13. lower chamber of the heart
  6. 15. abnormal swishing sound of heart (extra heart sound, between normal beats)
  7. 16. largest artery in the body
  8. 17. rhythm normal heart rhythm
Down
  1. 1. abnormal heart rhythm
  2. 2. high blood pressure
  3. 3. contraction phase of the heart
  4. 5. relaxation phase of the heart
  5. 7. small artery
  6. 9. inner lining of the heart
  7. 11. structures that temporarily close to keep blood flowing in one direction only
  8. 12. dilation of an arterial wall
  9. 14. upper chambers of the heart
  10. 16. largest type of blood vessel