Chapter 10, Problem 14P

Summary Introduction

To explain:

The major events of an action potential.

Introduction:

Action potential occurs when the membrane potential of a neuron reaches at the level of threshold potential it means that the neuron is enough depolarized. The polarization of a cell is the result of the unequal distribution of positive and negative ions across the cell membrane.

Polarization of a cell means its inside is negatively charged in comparison to the outside. Sodium ions are present outside the cell and potassium are present inside the cell the distribution of these done by the Na⁺-K+ pump that involves the process of transmission of sodium ions out from the cell and potassium ions inside the cell.