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