Biology — Membrane & Nernst Potential

E_{ion} = \frac{RT}{zF}\ln\frac{[\text{ion}]_{out}}{[\text{ion}]_{in}}

E_{ion} = \frac{61\ \text{mV}}{z}\log\frac{[\text{ion}]_{out}}{[\text{ion}]_{in}}

V_m = \frac{RT}{F}\ln\frac{P_K[\text{K}^+]_o + P_{Na}[\text{Na}^+]_o}{P_K[\text{K}^+]_i + P_{Na}[\text{Na}^+]_i}