Organ Systems

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Across
  1. 3. helps parts exit your body
  2. 4. once you eat food this happens
  3. 5. helps fight infection
  4. 7. heart and blood vesels
  5. 8. mouth, trachea and lungs
  6. 9. what pulls on bones
  7. 11. helps you reproduce
Down
  1. 1. brain, spinal cord, nerves
  2. 2. use your lungs to breathe, and use your nose
  3. 6. hormones
  4. 10. all of your bones