If that value is not reached when this movement takes place, the no action potential is actually generated. So we have to reach that value. So let's assume that value is in fact, reached. So once we reach this value, we have a very rapid opening of these sodium voltage gated on channels. So let's take a look at the following diagram. So, when the membrane is at a resting memory potential of negative 70 millivolts, this structure is basically in its closed form.