The Heart

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Across
  1. 2. Receives deoxygenated blood from right atrium
  2. 4. Takes oxygenated blood to body tissues
  3. 7. prevents the oxygenated and deoxygenated blood from mixing
  4. 9. the number of times the heart beats per minute
  5. 11. The surface of the heart is covered with a protective layer of tissue
  6. 12. the volume of blood pumped out by a ventricle in a heartbeat
  7. 15. provides protection & anchors the heart in place
  8. 16. relaxation of heart & filling with blood
  9. 17. valve with 3 flaps of tissue
  10. 19. Produces lubricating fluid to reduce friction of the heart against other tissues
  11. 21. Returns blood to heart from lower body
  12. 22. contraction of heart
Down
  1. 1. Returns blood to heart from upper body
  2. 3. Receives oxygenated blood from left atrium
  3. 5. Brings oxygenated blood from lungs
  4. 6. Thickest layer of the heart
  5. 8. Receives deoxygenated blood from body tissues
  6. 10. Receives oxygenated blood from lungs
  7. 13. Tip of heart
  8. 14. valve with 2 flaps of tissue
  9. 18. Provide oxygen to heart itself
  10. 20. Carries deoxygenated blood to the lungs to pick up more oxygen