Yeah, it's hollow there.

Sounds hollow.

Then he put his open palm over his face and withdrew it.

We know the symptoms.

And then you can see the inside of the heart.

I'll do it in a different color.

Two of the valves I'm gonna name, I'm giving them new names, something slightly different from what we've been referring to them by. These are the atrioventricular valves.

There's a slot for the mouth.

So the Baobabs, as they get older, tend to get pulpy in their centers and hollow out.

And that's going to keep happening.

It was a diamond cell structure was the point of departure.

Is it here, only here, and what?

So again, you can see the extension of this Great Wall of galaxies showing up here.

The first into the right atrium. This is chamber number one.

Keep your eye on the valves and we'll talk about them as the blood moves through.

And the blood goes down into the right ventricle. And then, on the other side I'm going to label the last two chambers.

In Japan, also, deindustrialization is happening.

So the inside is going to be hollowed out.

Right, I'll have to do a report.

So the blood from the arterial side is coming from the aorta and on the venous side it's actually not even dumping into the inferior or superior vena cava, kind of little known fact that is coming directly into the right atrium.

From the body... to the right auricle... to the right ventricle... and out the pulmonary arteries to the lungs.

So let's get started in the upper part of the heart. The Right atrium, It's right there.

So unlike the CAT scans, X rays, thalliums, for women whose breast is in the way of looking at the heart, every time we order something that has even a small amount of radiation, we say, Do we really need that test?

We're going to zoom in and zoom in.

It looks rather bird like because it is.

And I present to you a concept that these are extended neurological membranes.

Blood flows from the right atrium to the right ventricle, then it goes to the lungs and from the left atrium to the left ventricle.

And it goes down into, you can probably guess how this one is called, is our left ventricle.

If I was doing this entire block it would be a cylinder.

They are not nearly as complex as hollow organs.

Look at the vertebrae, full of air sacs and hollows, like a bird.

So you've already learned that the valves got endocardium.

Pookums here really has her heart set on another R2.

So I'm gonna just take some blue paint to indicate deoxygenated blood or blood without oxygen, I'm gonna paint in how it look.

Man is as fickle as autumn weather.

A woman's mind and winter wind change often.

A woman is a weathercock.

The pulmonary veins drain blood and into the left atrium, right.

So what is that that is our left atrium.

On the left you can see a lava tube forming at a recent eruption Mount Etna in Sicily and this is the way these tubes form.

Can I help you? I'm the plumber, checking the radiators.

There's an open chamber about 20 meters in, behind the rock.

This is chamber number two. It goes to the lungs and then back up to the left atrium.

Let's start with blood going from the right atrium, this way into the right ventricle.

The Ballistics Expert in Fernando Coelho examines the damage