Heart

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