Repolarization of nerve action potential is due to:
Inward sodium current
Inward potassium current
Inward potassium current and outward sodium current
Outward potassium current and inward sodium current
Ans. D. Outward potassium current and inward sodium currentThe repolarization is due to the opening of voltage-gated K+ channels (K+ outward movement).During this Na+ channels rapidly enter a closed state called the inactivated state. So, few Na+ still enter during repolarization also.
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