little air sacs super small air sacs and I'm going to talk about these air sacs in a second.

Let me draw these air sacs.

So you have these air sacs like this.

Now he has jumped and filled the sacs along his back with air.

And when we die, we don't even have to be placed in different refuse sacs.

The pipe gets thinner and thinner and thinner and they end up at these little air sacs.

So we have these alveolar sacs that I talked about and they're in these little clumps like this.

These are these super small sacs that we talked about in the last video on the pulmonary system.

They keep dividing smaller and smaller, thinner and thinner and thinner, into these little air sacs, just like that.

Well, the key here is that these air sacs are super small and have very, very, very thin walls or

Maybe a bronchiole is terminating in another air sac just like that another set of air sacs just like that.

For example, in the liver, they form channels to detoxify the blood in the lungs, they line air sacs for gas exchange.

Let him jump so that he will fill the sacs along his backbone with air... ... and then he cannot go deep to die.

In the last video on the lungs or the gas exchange in our bodies or on the pulmonary system, we left off with the alveolar sacs.

It enters our body through the nose and mouth, moves down into the pharynx, trachea and bronchial tubes, and ultimately reaches the alveoli air sacs in the lungs.

The infection of herbivores (and occasionally humans) by the inhalational route normally proceeds as follows Once the spores are inhaled, they are transported through the air passages into the tiny air sacs (alveoli) in the lungs.

And then of course we have our bronchiole that feeds into this, and then that might have branched off from another one that feeds into another set of alveolar sacs, but I don't want to get too focused on that.

For example, in the liver they form channels to detoxify the blood in the lung they line air sacs for gas exchange in muscle they corkscrew so that muscles can contract without cutting off circulation and in nerves they course along like power lines, keeping those nerves alive.