第二章细胞的兴奋 chap. 2 The resting membrane potential chap 3 Action potential chap. 16 Electrical activity of the heart chap. 17 Natural excitation of the heart from Berne Levy Principles of Physiology (4thed)2005
• chap. 2 The resting membrane potential • chap. 3 Action potential 第二章 细胞的兴奋 from Berne & Levy Principles of Physiology (4th ed) 2005 • chap. 16 Electrical activity of the heart • chap. 17 Natural excitation of the heart
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
>Observations of Membrane potentials Extracellular recording Oscilloscope ++++++++ 8■|0 50 90七 Time ++++++++十 (a) Nerve cell
➢Observations of Membrane Potentials • Extracellular recording
o Intracellular recording Oscilloscope ++++++++ 8■0 50 ooo Time +++++++++ (b) Nerve cell
• Intracellular recording
● Voltage clamp 膜电位 跟随放大器 电位 电极 轴突 指令电位 反馈放大器 电流电极 膜电流 图2-14电压钳原理示意图
• Voltage clamp