Across
- 2. grey matter
- 4. rapid sequence of changes in the voltage
- 7. chemical messengers
- 8. control, motor, sense, homeostasis
- 10. includes brain and spinal cord
- 12. period of time where nothing can happen
- 14. carries info through nervous system
- 15. works with potassium to create a pump
Down
- 1. part of the nervous system split in two
- 3. short extention from cell body
- 5. carries action potential from axon hillock
- 6. white matter
- 9. contains the nucleas
- 11. the star of the nervous system, helps us think
- 13. alter the brain chemistry when taken