Nerve impulses and synapsis
Across
- 3. Joint together impulses from multiple neurons
- 4. when neurons do fire
- 5. several of the ions inside the neurons (Abrv. Elements)
- 7. neurons require ____ to fire
- 10. when a neuron is not sending signals
- 12. helps but NA and K back in place after repolarization
- 13. is an electo-chemical signal
- 15. stimuli for myelinated neurons only
- 18. require for pump to work
- 19. what do neurons not undergo?
- 20. the amount of stimulatino needed to fire
- 21. once threshold is reached, neuron always fires at ____
- 22. wave of depolar,repolar, and refract jumps from ___ to ___
Down
- 1. needed for an electrical current
- 2. lots of stimulation required
- 6. little stimulation required
- 8. pump made up of ___
- 9. Na gates open inside of axon is + & ouside is -
- 11. K gates open outside of axon is now + & inside now -
- 14. more positive charges outside than inside
- 16. amount of na that leaves
- 17. amount of potassium that goes in