The main ion responsible for initiating the action potential at the axon hillock is _____.
A) potassium
B) sodium
C) chlorine
D) calcium

Question

Quizplus · Accepted Answer

The main ion responsible for initiating the action potential at the axon hillock is sodium. When a neuron receives a signal, sodium channels open, allowing positively charged sodium ions to enter the neuron, leading to depolarization and initiation of an action potential.

The Main Ion Responsible for Initiating the Action Potential at the Axon