means that the resting potential (EM) will be heavily
weighted towards the chloride equilibrium potential (ECl)
which will remain relatively constant during
activity owing to the high [Cl] in the T system
and relatively large amount of Cl in ux needed to
change the [Cl]i
. For this reason, any inward ux of Cl
during the repolarizing phase of an AP has much less
effect on steady-state conditions than would a matching
outward ux of K