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