Across
- 2. Membrane becomes more negative than resting state
- 3. Return to negative membrane potential after depolarization
- 5. Pump that moves sodium out and potassium into the
- 7. Electrical charge difference across the membrane at rest
- 9. Junction where neurons communicate
- 10. Division controlling voluntary movement
- 11. Small, localized changes in membrane voltage
- 15. Chemical messenger released at synapses
- 17. Man's best friend
- 18. Peripheral nervous system (all nerves outside CNS)
- 19. Central nervous system (brain + spinal cord)
- 22. Cell that transmits electrical signals in the nervous system
- 23. Division controlling involuntary functions
- 24. Branch-like structures that receive incoming signals
Down
- 1. When the membrane becomes more positive
- 4. Rapid electrical signal traveling down an axon
- 6. “Rest and digest” division of ANS
- 8. Jumping of action potentials between nodes in myelinated axons
- 9. “Fight or flight” division of ANS
- 12. Long projection that carries signals away from the cell body
- 13. Support cells that protect and nourish neurons
- 14. Fatty insulation that speeds up nerve impulses
- 16. Structure that relays signals between brain and body
- 20. Minimum stimulus required to trigger an action potential
- 21. Organ that processes and integrates information