The trigger for an action potential is:

After the depolarisation phase of an action potential, the resting potential is restored by ______.   Question 15 options:   A)  the opening of voltage-gated potassium channels and the closing or inactivation of sodium channels.   B)  the opening of more voltage-gated sodium channels.   C)  a decrease in the membrane's permeability to potassium and chloride ions following closing of the chloride-potassium pump.   D)  a brief inhibition of the sodium-potassium pump.

Concerning neurons, DESCRIBE how local anaesthetics prevent the propagation of an Action Potential.

An increase in the magnitude of depolarization by a graded potential will increase the threshold potential increase the duration of an action potential increase the frequency of action potentials two of the above