11 Body Systems

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Across
  1. 2. offspring
  2. 3. with bones to move body
  3. 4. liquid waste
  4. 5. hair, nails, creates a waterproof barrier around body
  5. 7. hormones to keep various body systems in balance
  6. 9. breathing, exchange gas with lungs
  7. 10. protect and work with parts of body
  8. 11. the body against infections
Down
  1. 1. blood, nutrients, gases, and wastes
  2. 6. environment changes, sends signal to brain to feel
  3. 8. down food, removes wastes, absorbs nutrients