# 2pilihanWhich of the following can trigger formation of action potential in axon membrane?DepolarizationRepolarizationThreshold levelStimulus
# 3pilihanWhich of the following transport protein in axon membrane will be opened when stimulus is presence?Voltage-gated Na+ channelVoltage-gated K+ channelSodium-potassium pumpNon-voltage Na+ channel
# 4pilihanWhich of the following is the phase of axon membrane potential become more positive due to surge of Na+ inflow?Rising phase of action potentialFalling phase of action potentialResting stateUndershoot