click below
click below
Normal Size Small Size show me how
GenAction Potential
Steps of Generation of an Action Potential
Question | Answer |
---|---|
Depolarization to Threshold-towards 0(Graded depolarization large enough to open voltage gated sodium channels) | 1 |
Activation of Sodium Channels and Rapid Depolarization (Sodium rush into cytoplasm by electrochemical gradient, transmembrane potential is now a positive value) | 2 |
Inactivation of Sodium Channels and activation of Potassium Channels (Sodium channels inactivate at about +30mv, opening voltage gated potassium channels, potassium moves out of cytosol, repolarization | 3 |
Closing of potassium channels (potassium channels close as resting potential is reached, causing brief hyperpolarization) | 4 |