Q. During the conduction of nerve impulse, the repolarization occurs with the
A) Influx of $K^{+}$ ions
B) Influx of $Na^{+}$ ions
C) Efflux of $K^{+}$ ions
D) Efflux of ${Mg}^{2 +}\$ions
Explanation
When a stimulus is applied, sodium potassium pump stop operating. Sodium ions rush inside and potassium ions rush outside. This results in depolarization (action potential). After a period of action potential sodium potassium pump operate (efflux of $Na^{+}$ and influxes of $K^{+}$) and axon will get resting potential by repolarization.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.