Zoology - Neural Control and Coordination Question with Solution | TestHub

When the threshold stimulus is applied, the permeability of the membrane for sodium ions will change. Voltage gated sodium ion channels open and ${\mathrm{Na}}^{+}$ion flows form extracellular fluid to intracellular fluid, the outside becomes negative and inside positive. The membrane is depolarised \& when the two ends of this membrane is connected to oscilloscope a potential difference of $+30\mathrm{mv}$, called as action potential is generated.