Across
- 4. chemicals that relay information
- 7. most complex part of the brain
- 8. largest part of the nervous system
- 9. voluntary movements
- 10. receive impulses
- 15. surrounds gray matter
- 17. maintains posture and balance
- 18. pathway from the brain to the spinal cord
- 20. sends electrical signals to other neurons
Down
- 1. contains the brain and spinal cord
- 2. best type of synapse
- 3. involved in everything in your body
- 5. cables that carry electrical impulses
- 6. protects the spinal cord
- 9. fight or flight
- 11. gap between neurons
- 12. supporting cells
- 13. has cell bodies of neurons
- 14. contains the somatic and autonomic nervous system
- 16. controls unconscious processes
- 19. building block of the nervous system