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  • Hello, I'm Rob. Welcome to 6 Minute English. With me today is Finn. Hello, Finn.

  • Hi Rob!

  • In this programme we're going to be talking about blood.

  • Yes. Blood? Did I ever tell you, Rob, that I really hate the sight of blood? And I've

  • even been known to faintthat's to lose consciousness - at the sight of a needle.

  • Come on, Finn. I think you've got a lot to learn. You wouldn't be here without it, you

  • know! It's a fascinating topic. All sorts of discoveries are being made these days,

  • which could change medical science for ever.

  • Yes. Well, you are right, of course. Blood was even thought to relate to human character.

  • People were hot-bloodiedquick to angeror cold-bloodiedlacking in passion.

  • There were all the myths about vampires when young blood was thought to revitalise older

  • people. There's a dreadful story that a Hungarian countess had hundreds of young women killed

  • so she could bathe in their blood and stay youthful-looking.

  • Right. OK. And in Roman times, if a young gladiator died in battle, people used to drink

  • his blood because they thought it would keep them healthy.

  • For 3,000 years, people have been cut or given leeches to let out the blood because they

  • thought that would make people better. Incredibly, it carried on until the 19th century. But

  • it actually made people worse, or even killed them.

  • So I won't be doing that today.

  • OK. Instead, how about answering a question all about blood Finn?

  • Go on then.

  • If you laid out all the blood vessels in an adult body end to end how long would they

  • be? Would they be

  • a) 30,000 miles

  • b) 100,000 miles or

  • c) 200,000 miles long?

  • Well, let's say 100,000 miles. That's b).

  • OK. Well, we'll see if you got the right answer at the end of the programme. OK, well let's

  • talk more about blood now. We've heard about blood in history but Finn, did you know that

  • today beauticians are running businesses in which people pay to have their blood extracted,

  • then injected into their face?

  • Yes I have heard about this. It's thought to rejuvenatethat's to give new life

  • to - their skin. Michael Mosley has had just that done to his face as an experiment. He's

  • a doctor and presenter with the BBC. Let's listen to him talking about it. He uses an

  • expression that means "go faster". Can you tell me what it is?

  • Michael Mosley, TV presenter and doctor Sometimes known as the Vampire Facelift, PRP

  • Platelet Rich Plasma therapyclaims to accelerate healing and reverse the signs

  • of ageing. First my blood is treated to make a concentrated solution of platelets in plasma.

  • Next, this is injected directly into my face.

  • Ouch! And the word he used was "accelerate". Now that means to make faster.

  • And he said they "treated" his blood. This means "changed or transformed" it.

  • Well, today, of course, controlled blood transfusion is a completely normal medical practice that

  • saves countless lives. And blood donorsthe people who give their bloodare an important

  • part of healthcare.

  • Yes, Finn, but there's all sorts of other amazing things that blood can do. If we are

  • running at altitudehigh up - the limbs get tired because there's not enough oxygen.

  • The blood then starts creating new red cells and pours them into the system. That's why

  • athletes often train in the mountains.

  • Altitude training, isn't it? And, apparently, the different types of food you eat have an

  • immediate effect on your blood, or rather the element of blood called plasma. So, if

  • you eat a cholesterol-high breakfast, for example, very soon after that you can see

  • the fat in the blood.

  • Nice. Ideas about how blood moves around your body have changed a lot over the years too.

  • The Romans thought blood flowed one way and came out of our feet and hands and was then

  • burnt away. But William Harvey in the 17thcentury found that blood circulated via veins and

  • arteriesthese are the tubes in our body where blood is carried around.

  • And let's not forget clottingthat's when the blood hardens. If our blood didn't clot

  • when we cut ourselves we'd be dead within minutes. It is really fascinating isn't it?

  • And we're just beginning to understand stem cells. These are also in the blood and are

  • used to repair various organs in the body

  • Modern science is really helping us to understand blood properly for the first time and showing

  • us the way forward.

  • Now Rob, before my blood boils, could you let me know the answer to the quiz question

  • Rob?

  • Yes. So, I asked you if you laid out all the blood vessels in an adult body end to end

  • how long would they be: 30,000 miles, 100,000 miles or 200,000 miles?

  • Well, I said 100,000 miles.

  • Wow. And you know your blood vessels, because you got that question right.

  • Well, I measured them earlier.

  • Good. And how do you feel about blood now?

  • Well, I'm probably a bit scared of it still. But now that I know all of these wonderful

  • things that it does, I really get why it's so important.

  • Great. So, let's remind ourselves of some of the words we've said today, Finn.

  • Here we are:

  • faint

  • rejuvenate

  • transfusion

  • cholesterol-high

  • veins and arteries

  • clotting

  • accelerate

  • treated

  • Thank you. Well, that's it for today. Please visit bbclearningenglish.com to find more

  • 6 Minute English programmes. Until next time. Goodbye!

  • Goodbye!

Hello, I'm Rob. Welcome to 6 Minute English. With me today is Finn. Hello, Finn.

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B1 UK blood finn rob plasma accelerate transfusion

6 Minute Learning English From BBC - The wonder of blood

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    유파파 posted on 2016/03/31
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