Crossword Puzzle on the Circulatory System

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Across
  1. 2. Gas that deoxygenated blood picks up from the lungs
  2. 6. Lower chambers,pumps blood to lungs and rest of body
  3. 7. Valve between the left atrium and left ventricle
  4. 8. The largest artery of the body
  5. 9. Double-layer sac that protects the heart
  6. 13. Circulation between heart and lungs
  7. 16. Upper chambers, received blood from heart and lungs
  8. 17. Approximate size of your heart
  9. 18. Type of blood on the right side of heart
  10. 19. How deep should chest compressions be
Down
  1. 1. circulation between heart and body
  2. 3. What is the second step for Hands only CPR
  3. 4. Valve between right atrium and right ventricle
  4. 5. Allows blood to flow in one direction only
  5. 10. What divides the heart
  6. 11. Type of blood on the left side of heart
  7. 12. Valve guards right ventricle and pulmonary artery
  8. 14. Valve guards left ventricle and aorta
  9. 15. Type of fibers the heart is made of