Body Systems

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