Human body systems

1234567891011121314151617181920
Across
  1. 5. break down bone
  2. 7. carry blood towards the heart
  3. 10. the act of breathing in oxygen for it to be used
  4. 11. the muscles found in the heart
  5. 12. solid outside part of the bone
  6. 13. make new bone and help repair
  7. 16. the system that goes throughout the whole body
  8. 18. inside the compact bone
  9. 19. short loop from heart to lungs and back
  10. 20. Muscles attached by tendons to the bone
Down
  1. 1. carry blood away from the heart
  2. 2. controls what you think and feel
  3. 3. soft tissue that contains protein
  4. 4. blowing out carbon dioxide because we don’t need to use it
  5. 6. the system that contains the brain and spinal cord
  6. 8. contains nerves that branch out into every organ
  7. 9. allow us to breathe
  8. 14. where the two openings meet when inhaling
  9. 15. carry blood away and towards the heart
  10. 17. muscles we can’t control