Action Potential Process
- Created by: BethCuddington
- Created on: 12-04-17 18:01
View mindmap
- Action potentials
- 1. Stimulation at the axon hillock reaches -65MV - neuron becomes depolarised
- 2. Voltage gated sodium channels open
- 3. Sodium rushes in
- 4. Membrane potential reaches +50MV
- 5. Sodium channels close
- 6. Change in membrane potential causes K+ channels to open - K+ rushes out
- 7. Membrane starts to repolarise
- 8. K+ channels close later - causes hyperpolarisation
- 9. Refractory period - harder to stimulate another AP. Needs more stimulation than initially was needed. Prevents AP moving backwards
Comments
No comments have yet been made