Observations of Membrane Potentials 1. IONIC EQUILIBRIA 2. RESTING MEMBRANE POTENTIALS 3. SUBTHRESHOLD RESPONSES 4 ACTION PONTIELS 5.心肌细胞和起搏细胞的动作电位Observations of Membrane Potentials 4. ACTION PONTIELS 1. IONIC EQUILIBRIA 2. RESTING MEMBRANE POTENTIALS 3. SUBTHRESHOLD RESPONSES 5. 心肌细胞和起搏细胞的动作电位