Zoology - Neural Control and Coordination Question with Solution | TestHub

During depolarization, the voltage-gated$\text{Na}+$channel opens due to the arrival of signal or action potential. This leads to the rapid movement of$\text{Na}+$ions from an outside extracellular fluid (ECF) to inside axoplasm as the concentration of$\text{Na}+$ions is more on outside or ECF. This leads to developing a net positive charge inside and net positive charge outside the axonal membrane.