A_Neurobiology_003_MembranePotential
Resting Membrane Potential 可兴奋的细胞不产生冲动时,称为静息状态;处于静息状态的神经元膜内相对于膜外是负电荷,跨膜电荷存在着差异称为resting membrane potential Excitable Membrane: 可以产生动作电位的细胞的膜(神经元或者肌肉细胞) The Chemical Basis cytosal and extracellular fluid: Water is the main solvent. Ions (Cations $+$ and Anions $-$) are the charge carriers. phospholipid membrane: 提供屏障作用,由于磷脂双分子层是非极性的,导致离子无法通过 Ion pumps: 细胞膜上的跨膜蛋白,可以允许特定离子通过细胞膜 Movement of Ion