The change in electrical charge from –70 mV to the peak of the action potential is due to ___ and the change in electrical charge from the peak of +30 or +40 mV back to –70 mV is due to___. inflow of chloride ions, outflow of sodium ions inflow of potassium ions, outflow of sodium ions inflow of sodium ions, outflow of sodium ions inflow of sodium ions, outflow of potassium ions