00:01
The first step in the action potential is the resting stage.
00:04
So first is a resting state.
00:06
In the resting stage there is a presence of negative charge across the membrane.
00:11
Suppose this is the membrane we do have the negative charge across the membrane, more negative charge and there's a positive charge outside the membrane.
00:19
So this is the stage in the resting potential that means the negative is present there is more negative as compared to the outside of the membrane.
00:27
The second stage is depolarization.
00:30
So depolarization is the second stage in the generation of action potential.
00:36
In this, when the action potential reaches the dendrite or the cell body, the sodium pumps open.
00:42
So when there is a sodium pump open, there is a more influx of sodium inside the cell.
00:47
So there is a more sodium influx inside the cell.
00:51
That means there will be the creation of positive charge inside the cell.
00:55
So there will be the opposite of charge as compared to restrictive potential.
01:00
So this stage is known as depolarization.
01:03
And next is action potential.
01:06
So action potential is initiated only when the depolarization reaches a specific threshold.
01:13
So action potential is generated.
01:14
That means more sodium channels are going to open...