Human Body Systems

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Across
  1. 6. structure and support
  2. 7. regulates hormones
  3. 9. fights off infections
  4. 10. circulates blood throughout
  5. 11. removes liquid waste
Down
  1. 1. inhales and exhales
  2. 2. barrier from the outside
  3. 3. reproduce and keep the species alive
  4. 4. contracts to allow movement
  5. 5. sends communication signals
  6. 8. absorb nutrients and rids of waste