Body Systems

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Across
  1. 3. This can be lost just by breathing
  2. 4. There are ___ types of muscles
  3. 5. Has 54 bones
  4. 8. Fills bones
  5. 12. This system assists your sense of smell
  6. 17. The only organ that can float
  7. 18. A heart beats ___ times daily
  8. 20. This system controls brain growth
Down
  1. 1. Of energy reserves are used by the brain
  2. 2. There are more than ___ bones in your body
  3. 6. Blood vessels extend over 60,000 ___
  4. 7. Has 26 bones
  5. 9. Your body contains over ___ muscles
  6. 10. We have ___ of nerve cells
  7. 11. Muscles make up ___ of body weight
  8. 13. In the Nervous System, this is a major organ
  9. 14. This can be caused by many different viruses
  10. 15. The hardest working muscle
  11. 16. The heart pumps 2 ___ every time it beats
  12. 19. There are ___ types of circulatory systems