Do not exceed space given. Define permeability and conductance. Give a physiological example where the permeability to a given ion is high while the conductance is zero. Hence every cycle makes the inside slightly more negative than the outside. The resting potential rises immediately to -60 mV due to the electrogenic nature of the pump, after which it will slowly rise to 0 mV as the Na and K gradients break down.
Saltatory conduction occurs in myelinated cells.
You record a post-synaptic potential show below. Only the falling phase of the PSP can be used here since the rising phase is during active opening and closing of channels. If you want to eliminate the Na current and record only the outward K current, you have three ways of accomplishing this aim. Assume you have control over the external solution and the voltage of the clamp pulse. Make certain that your procedures make the Na current zero.