Human Body Systems

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Across
  1. 1. excretes urine
  2. 4. Includes the muscle tissues
  3. 7. Number one fuel source
  4. 9. This system includes hair, skin, and nails
  5. 10. System that includes the brain and spinal cord
  6. 12. System that defends the body against infections
Down
  1. 2. This system makes humans
  2. 3. Organs that are used in breathing
  3. 5. Your bodys support structure
  4. 6. excretes waste
  5. 8. Contains organs
  6. 11. System that breaks down food