Okay, welcome. My name is Devine. This is episode 418 of the Devine

Intervention Podcasts and in today's podcast will be continuing the P pulmonary

Path of Physiology series. This is going to be series number nine.

Series number nine. So today we'll be discussing a lot of stuff in relation to ventilation and profusion.

And again I'll make it a goal of mind to go very slowly because this is something

that you really need to understand.

This is not something that you want to be

struggling with. Again, if you understand the stuff, it's going to make so many

things make sense to you. So let's just jump right into it for the sake of time. The very first thing you need to understand is all the tissues in your body need oxygen in one way or the other. That is just true.

Every single tissue in your body needs oxygen in one way or the other to

medium metabolic demands. And how do these tissues get this oxygen? Well they get the oxygen by virtue of the blood

that flows to these tissues, right? Blood flows to these tissues, that blood is

carrying oxygen inside it. So the oxygen in that blood is what makes those tissues live.

Now let's then talk about the concept of this oxygen delivery, because again, tissues need oxygen

delivery to work right for literally the tissues to live. So oxygen delivery to tissues is really

a function of two things. It's literally a

function of two things. The first thing is that blood that's carrying the

oxygen, how much oxygen is there in that actual blood?

Because if blood is, if blood does not have much oxygen in it, even if it gets to the

tissues, then that blood is not particularly useful to those

tissues. So that's the oxygen content. And then the other thing that controls how much

oxygen is delivered to a tissue is how well are those organs

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