Heart

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Across
  1. 6. Type of circulation where blood moves from heart to body and back to heart
  2. 7. carries oxygenated blood to the heart
  3. 12. type of circulation where blood moves from heart to lungs and back to heart
  4. 13. wall between the two ventricles
  5. 14. lower chambers of the heart
Down
  1. 1. present at the opening of pulmonary artery
  2. 2. carries deoxygenated blood to the lungs
  3. 3. Upper smaller chamber of the heart
  4. 4. prevents backflow of blood from left ventricle to left auricle
  5. 5. membrane surrounding the heart
  6. 8. node initiates heartbeat
  7. 9. prevents backflow of blood from right ventricle to right atrium
  8. 10. carries oxygenated blood to heart muscles
  9. 11. carries oxygenated blood from heart to body