Nervous System Crossword

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Across
  1. 1. produces melatonin that helps you sleep at night and wakes you up in the morning
  2. 6. is a bone and protects the brain
  3. 9. controls the right side of the body
  4. 11. also called neurons
  5. 13. controls your posture, balance, and coordination
  6. 14. controls the amount of light that will enter through the pupil
  7. 15. controls the left side of the body
  8. 17. made up of bundles of nerves that carries messages from the brain to all the parts of the body
  9. 19. controls voluntary actions like sitting, smiling, and reaching
  10. 20. weigh about 3 pounds and the leader of the body
Down
  1. 2. controls involuntary actions like breathing and heartbeat
  2. 3. controls thinking and muscles
  3. 4. ______ are connected to every part of the body
  4. 5. a nerve that send images from the eyes to the brain
  5. 7. controls your heart, lungs, and important reflexes
  6. 8. messages from neurons
  7. 10. vision that you are not focused on
  8. 12. eyes, ears, nose, mouth, and skin
  9. 16. a thin transparent layer which covers the round color part of the eye
  10. 18. in the center of the iris