Up here you have the pulmonary 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.

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.

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

These valves shut down like that.

No surprise, just as before, if that's S1, this is S2.

Just to orientate us this is the tricuspid (T) and this is our mitral (M).

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

If the ventricles are squeezing, there's a good chance the blood is gonna shoot up in any direction it can go.

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.

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

So what should you do? Am I telling you to not strive?

This style of hat is now in fashion.

You put a little sticky tape.

And I bleed... and dance... and plead...

The boy must have the Matrix.

Hats should be popular next year.

Do you like my pink hat? Here, look, feel better.

Do you understand?

Monks.

The monk?

You.

Lennox, I'm with the kid.

Got a little, uh... spasm in your trapezius.

You all right?

Okay, take her down!

I took off my hat and entered the church.

Gedevan, you tell me.

Paddy boy.

The priest participated in the children's games.

He entered the room with his hat off.

He took off his cap in front of the entrance.

Hey you!

Monastety?

Come here, boy.

Hey, boy.

You're absolutely right. I have made a lot of money. I'm good at what I do.

Don't put bell peppers in the bento.

Rough air ahead. We're in for some chop.

Take off your hat when you enter a classroom.

Remove your hat when you go inside.

Cloche, dunce hat, death cap, coif, snood, barboosh, pugree, yarmulke, cockle hat, porkpie, tam o'shanter, billycock, bicorne, tricorne, bandeau, bongrace, fantail, night cap, Garibaldi, fez...

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

Their boarding party disabled our antimatter flow regulators.