① skeletal muscle 0 serum K]↓ 30mv -60mv RP(Em) TP(Et) -90my hyperpolarization ② heart arrhythmia serum[R]↓ 30mv 60m RP(Em) dipole① skeletal muscle 0 m v serum[K+ ] - 3 0mv A P - 6 0mv RP(Em) TP(Et) - -90mv hyperpolarization ② heart arrhythmia 0 mv serum[K+ ] - 30mv - 6 0mv - 90mv RP(Em) depolarization