Question

Describe the movement of ions that causes an action potential to occur.

Answer 1

A stimulus causes sodium channels to open, allowing sodium ions to enter the neuron.

The neuron becomes more positive.

Potassium  channels open, allowing potassium ions to exit the cell.

Sodium channels close and the cell gradually returns to resting levels.

answer for e2020

Answer 2

Okay well the signal or the movement coming through the neuron(and its axon)  is about the ions. The ion is a charged like particle, such as Na+ (If you remember that). Na+ is a sodium ion. So most of those ions I was talking about before just simply flow in or out of the cell. I hope this helps! <3