Blood flows through blood vessels.

Blood runs in the veins.

And for more than 200 years we have

So thrombi are these blood clots that form, that can help to obstruct a blood vessel.

When I made love with my wife, I had no sperm that came out of me

When an area of the brain is active, meaning a neural area is active, it gets blood flow shunted to that area.

It's a lonely thing, a violin.

No bloodshed in all the city.

Blood has been spilled this night.

Imagine the blood flowing through your body

So it would be destructing the blood flow downstream right over there.

So you can imagine if you have these things build up, it's narrowing the actual vessel that's supplying blood downstream from that obstruction.

The blood ran red.

Scientists, sort of at the end of the 20th century,

So again this is right when the heart is squeezing blood out. So we know blood is flowing through here.

That's usually the flow of blood.

Blood poured from the cut vein.

In that general process we talk about the restriction of blood flow, that is ischemia that's happening.

Blood ran from his wound.

So there's this actual extra little step here, where blood is going to and from the lungs, and that's the pulmonary flow.

These minor changes in blockages caused a 300 percent improvement in blood flow, and using cardiac positron emission tomography, or PET, scans, blue and black is no blood flow, orange and white is maximal.

The police wanted to avoid bloodshed.

Blood ran from his wound.

The same thing happens on this side.

My hands bled, but I wouldn't stop.

Enough blood has been spilt on his account.

A samurai's blood runs in Taro's veins.

They shed their blood for their independence.

Stop the flow of blood from the wound.

That waste, let's draw a little ball right here, it's going to start accumulating, you're going to start collecting more and more of it since the blood is not really flowing.

If you squeeze a newspaper, it seems to bleed.

The left atrium and the left ventricle.

For blood of ours shed blood of Montague. O cousin, cousin!

I brought the sword. Nothing more.

O prince! O husband! O, the blood is spill'd Of my dear kinsman! Prince, as thou art true,

But one of the most common defects would be that you would have a communication between these two.

The other cool feature about elastic energy is that not only does it lower your pressure which we have talked about, but it also can be used to convert it into movement energy.

In fact, the so what is, in the brain, changes in neural activity, the things that make your brain work, the things that make your software work in your brain, are tightly correlated with changes in blood flow.

So, what a toe cell needs, and what every cell needs, and that could be a finger cell or a skin cell, or really any cell that's living, needs flow.

Except your heart

But I cannot carry on

And to allow that, I need to show you, these open up.

And that's gonna be dumping into the top of the heart. And then separately you have veins from the legs.

So, everything the part of the plaque that hasn't moved can experience clotting, and the part of the plaque that is dumped in the bloodstream can also clot.

Right? It needs this blood to be flowing nicely and smoothly. And if there is flow then you get a very different picture, right?