<prompt> Repolarization of nerve action potential is due to:Inward sodium currentInward potassium currentInward potassium current and outward sodium currentOutward potassium current and inward sodium current  <response>: 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. 