Across
- 1. channel that opens when neurotransmitter binds
- 3. process of becoming more negative than rest
- 5. electrical charge difference across a membrane
- 6. signal transmitted along neuron
- 7. process of vesicle releasing contents outside cell
- 8. brief time when neuron cannot fire again
- 9. neuron sending the signal
- 10. neuron receiving the signal
- 13. electrical signal traveling along a neuron
- 18. pathway that allows ions to cross membrane
- 20. unequal distribution of charges across a membrane
- 21. reabsorption of neurotransmitters
- 22. response where impulse fully occurs or not at all
- 23. stimulus that reaches threshold level
- 25. chemical messenger between neurons
- 27. communication across synapse
- 30. junction between two neurons
- 31. gap between neurons
- 33. decreases likelihood of impulse firing
- 34. membrane becomes less negative as sodium enters
- 36. charge of a neuron at rest around negative seventy millivolts
- 37. return to negative charge after depolarization
- 38. membrane becomes more negative than resting level
- 39. fast conduction jumping between nodes
Down
- 2. signal transmitted across synapse
- 4. peak of electrical signal
- 11. positively charged ion entering during depolarization
- 12. membrane protein allowing ion passage
- 14. increases likelihood of impulse firing
- 15. process of returning to negative
- 16. slow conduction along unmyelinated axon
- 17. process of becoming more positive
- 19. minimum stimulus required to trigger an action potential
- 24. rapid electrical signal traveling along a neuron
- 26. positively charged ion leaving during repolarization
- 27. end of axon that releases neurotransmitters
- 28. stores neurotransmitters
- 29. triggers neurotransmitter release at synapse
- 32. channel that opens based on membrane charge
- 35. difference in concentration driving ion movement