And the veins actually drain into a spot , directly into the right atrium.

This is an arterial, right.

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

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

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.

This is an artery. And blood is actually going through the artery, that way.

So let's get a little more precise with the words we've been talking about, especially with heart disease and heart failure and all of the rest.

And these are called the bronchial arteries.

And this is of course the aorta. This is my aorta.

And then on the other side where the veins are bringing blood back to the heart most of the blood as it turns out, most of the blood actually goes this way into the pulmonary veins.

You can see how there are definetely some parallels between how the veins and arteries are set up.

There is actually a little spot right there that they drain in to.

And so when people talk about arteries getting blocked or getting clogged, they're talking about the coronary arteries.

I need two largebore Ivs, 6 units Oneg, type and cross for 6 more units,

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.

You can see how the pulmonary and aortic valve are closed when the mitral and tricuspid valve are open.

Stay clear of the hepatic artery.

And these two veins, this is also a vein, these two veins are actually dragging blood in from all over the body, into the heart.

In the middle, you can see that little structure squeezing out, that's the left ventricle, pushing blood out through the aortic valve.

And then you've got the capillaries, you've got some blood kind of from both places the pulmonary circulation and the blood from the systemic circulation again mixing.

You can see the atrium and the ventricles, how blood flows to our arteries and veins.

And anytime I mention the word vein, I just want to make sure you think of blood going towards the heart.

It's going to end up at the, maybe I should draw it here, it's ending up with the right atrium. That's just the name of the chamber where the blood ends up in.

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.

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

So the first branches go and serve the heart. So it's kind of the first to get systemic circulation blood.

Royal blood.

So you've got a couple of arteries that are branching off and these are also part of the systemic circulation systemic circulation.

Let's say this toe right here.

Acid for blood.

Something in the blood.

What blood?

Inferior vena cava, and this is the large vein that brings back all the blood from the bottom half of the body.

And it came up in the right atrium from a giant vessel up top called the superior vena cava. And this is a vein of course because it's bringing blood towards the heart.

This is highly thrombogenic material. Thrombogenic, very fancy word.

In concluding the knee exam, it's important to document a neurovascular exam.

In concluding the ankle and foot exam, it's important to document neurovascular.

The cycle of blood is not regular.

What is your blood type?

What's your blood type?

No, it's dark in here.

47,905 blood samples.

My blood test.

There's Tru Blood.