Outside Membrane resting K 4 mML Na= 142 mM/L Potential 0 mv +70 mv K 140 mM Na=5 mM Protein.+K Electrodes Neuron Potentiometer y excess of positive charges gives rise to an electrical outside and negative charges inside the membrane potential difference, which ranges from about 60 to 70 maintained because the lipid bilayer acts as a barrier to >(Microelectrode) the diffusion of ions9 Membrane Resting Potential ➢ excess of positive charges outside and negative charges inside the membrane ➢ maintained because the lipid bilayer acts as a barrier to the diffusion of ions ➢ gives rise to an electrical potential difference, which ranges from about 60 to 70 mV. ➢ (Microelectrode) Potentiometer