So this valve is called the Tricuspid valve.

And it passed through the valve here. So this valve is called the Mitral valve.

Civil Horizontal Valve

It's sure not a leaky gas pipe.

One will be the tricuspid valve and the other the mitral valve.

But before it goes it has to passed another valve. So this is a valve right here. Call it Pulmonary valve.

And so perception actually is leaky in any case.

The main valve is turned off.

Here you've got the aortic valve.

And that is, you don't put water into a leaky bucket.

These models, like the leaky bucket, work well in most situations.

This is called a cycle valve tube.

Up here you have the pulmonary valve.

And then the final valve, I need to find a nice spot to write it maybe to right here, this final valve that passes through is called the Aortic valve.

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

Can I borrow a heart valve from you?

And this is how you make a valve.

What you also notice is that in any case our perception is leaky.

that's what I needed all right a leaky fountain pen. see you later.

It's gonna go back perhaps through the mitral valve, it can go there, or it might go through the tricuspid valve.

This is actually a heart valve, which we engineered.

a pen? what is it, a gag or something? a leaky pen. i'm supposed to need a leaky pen, is that it? a pen that drips all over the wait a minute.

I welded the breech, but the valve is still gaping.

Does the color of the valve matter? What matters here?

Let's watch. (Sound of air escaping from valve) (Music) (Whirring sound)

Open the air inlet valve to supply compressed air to the machine

And the way you engineer this heart valve is the same strategy.

You can see two of the leaflets of the aortic valve working there.

But the first few systems were these leaky, loud power guzzlers that Martha Stewart would definitely never have approved.

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

I've drawn the pulmonary valve as being open, but is that really the case?

On the starboard side, there's a big valve! Can you crank that boat down?

This is actually a heart valve that we've engineered, and you can see here, we have the structure of the heart valve and we've seeded that with cells, and then we exercise it.

It has a funny tri lobal shape at the bottom, which contains the aortic valve.

The un digestive food reaches the Ileo cecal valve and enters the large intestine or colon.

You'll hear S1 when the tricuspid and the mitral valve snap shut. So far so good.

And they are like the fundibulator valve of the architectural, uh, what do you think doctor Joseph?

This is the second chamber of the heart. And it gets there by passing through the valve.

At the back of the Machine, open the Air Inlet Valve to supply compressed air to the Machine

On the other side you have the mitral valve, which separates the left atrium from the left ventricle.

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

So these chordae tendinae, these cords are important for that reason. They keep the valve from flipping backwards.

Also denied and eliminated from any further discussion are disc brakes, fuel injection, hydraulic valve lifters, seat belts...

Likewise, if you have the artificial valve option, you're committed to antibiotic therapy whenever you have any intrusive medical treatment, even trips to the dentist require that you take antibiotics, in case you get an internal infection on the valve.

As the blood is now in the ventricles, you can see that the tricuspid and the mitral valve are open.