Explain the reason that the resting potential for neurons isaround -70mV. Be sure to include the roles of the K+ and Na+concentration gradients, electrical forces, passive ion channelsand the relative permeabilities of K+ and Na+. Now, say that analien race was discovered from a distant galaxy. Their cells have ahigher concentration of Na+ inside than outside their cells and ahigher concentration of K+ outside than inside. If this race’sneurons otherwise had the same relative permeability to K+ and Na+at rest that Earth organisms have, what might an approximate valueof the resting potential of these alien’s cells be? Why?
