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Across 4. bundle of the nerves that carry impulses from the ear to the brain 6. clear layer of the eye 7. black circle in the eye 8. bundle of nerves that carry impulses from the eye to brain 12. controls thought, memory, speech 13. tiny tissue in the ear that vibrates when sound waves strike it

Down 1. Wed Mar 23 09:30:47 2005 Start Wed Mar 23 09:30:47 2005 Finish black part of the eye where light rays are focused 2. nerve cell 3. tiny gap between neurons 4. teenage years 5. control balance 9. message that travels along nerve cells 10. the organ in the ear that sends impulses to the auditory nerve 11. controls the amount of light