Explain why alterations in potassium concentrations have more powerful effects on membrane resting potentials than alterations in sodium ions

The plasma membrane of almost every cell in the body maintains a resting potential. However the value of this potential changes according to the cell type. Under normal circumstances, there is a more negative potential inside than the outside. This is generally studied in the case of neurons where these miraculous cells maintain a resting potential of almost -70 mV.