And actually it stop there because of my arrows, but you can actually see now deoxygenated blood kind of goes from the right ventricle, through the pulmonary trunk, through the arteries and into the left and right lung.

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.

And that's why you see two things here, one here and you see one here and those are basically tubes.

And I hesitated there just to make sure I got that because it's taking blood away from the heart.

Here you have our tricuspid valve. And I'm gonna label it just as 'T'

Well, blood leaves the right ventricle, goes through a valve and after, on the other side you've got, this area right here.

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.

And remember I call them arteries, because they're going away from the heart. And there are two arteries, so pulmonary arteries left and right pulmonary arteries.

The bullet lacerated his pulmonary artery and lodged in his thoracic region.

Well after that it's gonna go this way it's going to go to this vessel and it's gonna split.

So when you have dub, you have noise coming from the pulmonic and the aortic valve snapping shut.

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

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

So, that's where the lungs come in.

But you also know that if that is what's making the noise, you can kind of guess, and it's a smart guess that at the same time the pulmonic and the aortic valve just opened.

His vitals are spiking.

And then, when the heart is ready to pump it back out, it goes into this artery, and the name of it is the aorta.

Your lungs stop breathing, your heart stops pumping.

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.

Now, to start the journey, it's gonna have to out of the left ventricle and into the largest artery of the body.

And let me actually show you where the blood vessels come from. These are called coronary vessels I just write the word coronary here.

It doesn't have any veins.

Coronary vessels So, coronary artery and vein.

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.

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

And on the right you actually see a carotid artery that was engineered.

Remove the ties that bind...

Right it's gonna have to go away from the heart. So that's the aorta. The aorta actually has the little arch like that.

And then it's gonna come out on the other side, in the pulmonary veins.

Smelling salts.

If the artery gets nicked, how long do i have?

I'm going to do some surgery here.

He's dying. Coronary blockage.

Remember the heart itself is a muscle. It itself needs oxygen.

No lesions. No aneurysms.

MAP's at 55.

In the jugular preferably. okay.

In your jugular on the side of your neck.

Midway up her right thigh?

I could just write artery and vein and essentially they would be behaving this way.

So these two veins, the superior vena cava and the inferior vena cava, are dragging the blood back to the heart, and, generally speaking, these are all considered, of course, veins.

And so when I draw these two, I really wnat you to just think of the two sides, veins coming from both sides.

I think she cut both arteries. I could hardly feel her pulse.