I drained his lungs.

His lungs are hemorrhaging.

The job, the second job of the heart, is actually also in this picture, and it's called pulmonary flow.

To drain the lung, okay?

So we've gone from the right ventricle around to the lungs, back again into the left atrium.

So there's this actual extra little step here, where blood is going to and from the lungs, and that's the pulmonary flow.

Thank you, Sir.

But this is not as I said in the beginning bad way of thinking about it.

And I've drawn it as one tube with no split and this is the pulmonary trunk. Pulmonary trunk.

So blood is headed towards the lungs, going first through the trunk, and of course after the trunk, there is left and right I write that up here pulmonary arteries are next.

So, that's where the lungs come in.

What's happening between these two, time like here, is that blood is actually squeezing out because the pulmonic and aortic valves just opened, blood is squeezing out and going to the whole body.

So that's kind of a intersting fact that not as much goes this way directly into that systemic circulation.

And it goes over to the left lung, and over to the right lung.

You're bleeding, you're bleeding.

Then these vessels and all that they trying to get will be called, these vessels, this will be my, make sure I get my right and left straight, this is my left pulmonary artery.

And this is my right pulmonary artery. So this is my right and left pulmonary artery.

This is a condition in which the heart fails, and instead of being able to pump all the blood forward, some of the blood backs up into the lung, the lungs fill up with blood, and that's why you have shortness of breath.

It also will cause internal bleeding upon ingestion.

Internal haemorrhaging.

450 out, and she's tachy in the 130s.

Am I bleeding?

Yes, you just lost some blood...

Make him bleed.

I think she fainted! Ha Ni get up!

You've got pulmonary arteries carrying blood, you've got bronchial arteries carrying blood and that blood mixes.

Let's start by labeling our heart, at the top, blood is coming into the right atrium, going to the right ventricle, it goes off to the lungs, comes back into the left atrium and then the left ventricle.

They don't bleed when they're cut.

No!

He wouldn't stay, so he bit the old man.

I'm chokin'.

There was all this blood coming out of me.

It's a godforsaken bloodbath.

You're bleeding!

I'm bleeding, man.

Is your head still bleeding?

Bleeding a little.

Simian haemorrhagic fever. Right under the chair.

I just got a nosebleed.

You're bleeding.

So if that was it, that would be really simple.

But, actually lungs are kind of interesting in the sense that there is a lot of mixing going on.

While she didn't have any medical evidence to back up her claim that there was a relationship between operatic arias and pulmonary hypertension, she was absolutely emphatic

We'll talk a little bit more about this in another video and I don't feel like this kind of got too confusing but I just want you to be aware that there is mixing going on in the lungs with the systemic and pulmonary circulation.

And the blood comes back from the right lung and the left lung, and gets pushed back into the heart, and then gets squeezed through the aorta.