Across
- 4. part of the brain that controls coordination.
- 8. the gap between 2 neurones
- 10. part of the brain that controls consciousness, intelligence, memory and language.
- 12. muscle or gland that carries out the response to bring conditions back to optimum levels
- 13. part of the eye that controls the size of the pupil.
- 16. see-though layer at the front of the eye.
- 17. carries electrical impulses to an effector.
- 18. layer of light-sensitive cells found at the back of the eye.
Down
- 1. people who study the brain and the nervous system
- 2. carries electrical impulses to the central nervous system.
- 3. part of the brain that controls unconscious activities like breathing and heart rate.
- 5. how long it takes you to respond to a stimulus.
- 6. outer layer of the eye that supports and protects the eye.
- 7. process of focusing on near and distant objects.
- 9. cells that detect stimuli
- 11. quick response that doesn't involve the conscious part of the brain.
- 14. nerve that carries impulses from the retina to the brain.
- 15. long-sightedness
- 17. short-sightedness
