Aplysia is a type of sea slug that is also often used in bioelectrical experiments. Below are typical

values for the parallel conductance model applied to an Aplysia cell. The cell is at rest, and the resting

potential is $-48\mathrm{.}86mV.$ Conductances are assumed constant.

$E_K=-83\mathrm{.}9mV,E_{Na}=52\mathrm{.}2mV,E_{Cl}=-56\mathrm{.}7mV$

$g_K=0\mathrm{.}177S,g_{Na}=,S,g_{Cl}=0\mathrm{.}707S$

a$.$ What is the sodium conductance, $g_{Na}?$

b$.$ What is the chloride current, $I_{Cl}?$

c$.$ At $V_{\text{r}\text{e}\text{s}\text{t}},$ what is the net current across the membrane?

d$.$ You accidentally spill some sodium into your test bath, increasing the extracellular concentration of

sodium. Qualitatively, how would $V_{\text{r}\text{e}\text{s}\text{t}}$ change? Explain your reasoning.