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

And it's job is of course to make sure the blood does not go from the left ventricle back to the left atrium by accident. Wants to make sure there is forward flows.

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.

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.

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

It never has been and it never will be.

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

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

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

Your behavior admits of no excuse.

Actions speak louder than words.

Actions speak louder than words.

There is no excuse for your actions.

His conduct admits of no excuse.

The lawyer determined his course of action.

Razzle so scared.

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

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

My lawyers will have a field day with it.

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

Is that something?

Can't you see, it's a lunchbox.

Doctors use 3D reconstructions from medical scanning devices to understand patients problems.

So this valve is called the Tricuspid valve.

So just like before where we went from the right atrium to the right vertricle, now we're going from the left atrium to the left ventricle.

What is it?

It's Ha Ni?

Lawyer. Politics.

It wasn't my fault, sir. Please don't deactivate me.

Willis! ...valves here.

How about we make a Sok Pal Book Lunch box?

In addition to being mayor of this town, I also happen to be a practicing attorney.

Smooth.

Oh, come on.

Oh, man.

Lunch pail.

There it is.

Come on.

Such was his eloquence that everybody was moved to tears.

Make me that. lt BR gt What?

You can take a guess as to which ones I'm referring to. Atrioventricular valves are the two valves between the atria and the ventricles.

When the valves snap shut, for example the tricuspid and the mitral valve snap shut, well, that makes a noise.

The lawyers argued the case for hours.

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

Give me a break.