Well the body works by starting a motor command in your brain, going down your spinal cord, out the nerves and to your periphery.

So you think of alternative mechanical parts.

You can see how there are definetely some parallels between how the veins and arteries are set up.

Blood flows through blood vessels.

Blood runs in the veins.

let's go to the brain and put something in the brain to record signals, or in the end of the peripheral nerve and record them there.

And for more than 200 years we have

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

She is bleeding!

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

You have spilled your own blood rather than that of an innocent.

It's a lonely thing, a violin.

No bloodshed in all the city.

Blood has been spilled this night.

They had this motto

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

Imagine the blood flowing through your body

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

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.

This is blood for blood, and by the gallons.

I don't want any bloodshed.

Only fresh zombies bleed, son.

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

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.

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.

I can hear your blood flowing.

Not everything has to be bang... I'm set. Scream, blood, more blood.

No blood, no foul.

The next blood that spills is gonna be theirs.

The next blood that spills, is theirs.

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.

I'm gonna take a shower. I still feel like there's blood all over me.

They shed their blood for their independence.

Stop the flow of blood from the wound.