00:01
Okay, i want to answer this question, let's talk about capillaries.
00:03
Remember that when you have your artery here, your artery is going to branch into arteries.
00:08
This is going to be an arterial, and then you're going to have the arterial side for the capillaries.
00:13
So this is going to be, these are going to be capillaries, for example.
00:17
Here you're going to have the tissues.
00:19
For example, let's suppose that this is the skeletal muscle.
00:22
It's going to be like this, like this.
00:27
This is your skeletal muscle.
00:29
And obviously here, because of metabolism, you're going to be like this.
00:31
You're going to produce carbon dioxide and this blood is going to have oxygen.
00:36
So gas exchange is going to occur here.
00:38
Okay.
00:39
And your blood is going to become deoxygenated and you're going to have here the venous side of your capillaries.
00:45
That are going to be like this.
00:47
You're going to then fuse all of them.
00:50
And you're going to get the venules.
00:54
The venules that are going to be like in the arteries practically.
00:58
And then you're going to have, they are going to drain to the veins.
01:02
So this is what is going to happen.
01:04
It says the diameter of pre -capillary is decreased in a muscle vascular bed.
01:10
It means practically here.
01:12
Remember that when you are exercising a knot, for example, if you are heavy lifting, your muscle is going to get bigger and it can constrict this arterial side or arterial side of the capillaries or particularly the pre -capillary part...