How would a change in Na plus conductance affect resting membrane potential?

An increase in Na⁺ conductance would lead to an influx of sodium ions into the cell, causing the membrane potential to become more positive and move closer to the sodium equilibrium potential, which is typically around +60 mV. This depolarization could make the resting membrane potential less negative or even shift it above the threshold for action potential generation. Conversely, a decrease in Na⁺ conductance would reduce sodium influx, potentially stabilizing the resting membrane potential at a more negative value. Overall, changes in Na⁺ conductance directly influence the excitability of the neuron or muscle cell.