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-Are you ready for our Ouch Snips? -Snip! -Ouch. -Exactly! | 0:00:02 | 0:00:04 | |
Well, they all help you to sing! | 0:00:18 | 0:00:20 | |
SINGS LONG NOTE | 0:00:20 | 0:00:22 | |
First up, let's take a closer look at the vocal cords. | 0:00:22 | 0:00:26 | |
This is a nasal endoscope. It's a very small camera | 0:00:26 | 0:00:28 | |
that I'm going to put up my nose and look at my vocal cords. | 0:00:28 | 0:00:31 | |
The best way for doctors like us to access the vocal cords | 0:00:36 | 0:00:39 | |
is through the nose, because if the camera | 0:00:39 | 0:00:41 | |
went via the mouth, the patient would start to gag and feel sick. | 0:00:41 | 0:00:44 | |
So feel in your throat. You'll feel a hard, gristly bit at the front. | 0:00:45 | 0:00:48 | |
That's your voice box or your larynx, | 0:00:48 | 0:00:51 | |
and that's where your vocal cords sit. | 0:00:51 | 0:00:53 | |
What you can see now is Chris' vocal cords. | 0:00:55 | 0:00:57 | |
They look like flaps or webs | 0:00:57 | 0:00:59 | |
going across his windpipe. | 0:00:59 | 0:01:00 | |
What happens is, as your lungs force air up your windpipe, | 0:01:00 | 0:01:04 | |
these flaps start to vibrate | 0:01:04 | 0:01:06 | |
and it's the vibration that causes noise. | 0:01:06 | 0:01:09 | |
So let's see them in action. | 0:01:09 | 0:01:10 | |
So, Chris, can you hum a high note? | 0:01:10 | 0:01:12 | |
HE HUMS | 0:01:12 | 0:01:15 | |
Now hum a low note. | 0:01:17 | 0:01:19 | |
HE HUMS | 0:01:19 | 0:01:21 | |
So when Chris hums a high note, | 0:01:21 | 0:01:23 | |
what you see is the vocal cords tightening and that means | 0:01:23 | 0:01:25 | |
they vibrate faster and make a higher note, | 0:01:25 | 0:01:28 | |
and when he hums a low note, the vocal cords relax, | 0:01:28 | 0:01:31 | |
they're much floppier, they vibrate more slowly | 0:01:31 | 0:01:33 | |
and you get a lower note. | 0:01:33 | 0:01:35 | |
Your vocal cords may make the sound, | 0:01:35 | 0:01:37 | |
but there's another unsung hero of singing. | 0:01:37 | 0:01:40 | |
SHE SINGS | 0:01:41 | 0:01:43 | |
Now, Lucy and other opera singers can hold a note this long, | 0:01:43 | 0:01:46 | |
because she's trained a special muscle, | 0:01:46 | 0:01:48 | |
one which we all have | 0:01:48 | 0:01:50 | |
called the diaphragm. | 0:01:50 | 0:01:51 | |
Now, your diaphragm sits here | 0:01:51 | 0:01:53 | |
at the bottom of your ribcage. | 0:01:53 | 0:01:55 | |
Thank you. | 0:01:55 | 0:01:56 | |
Let's find out what the diaphragm looks like and how it works. | 0:01:56 | 0:02:00 | |
Lucy. | 0:02:00 | 0:02:01 | |
# We're going to sho-ow-ow-ow-ow-ow-ow-ow-ow... # | 0:02:01 | 0:02:09 | |
Ahem. | 0:02:09 | 0:02:11 | |
# ..you | 0:02:11 | 0:02:12 | |
# Show you... # | 0:02:12 | 0:02:17 | |
Thanks, Lucy! | 0:02:17 | 0:02:19 | |
Your diaphragm is the main muscle you use when you breathe, | 0:02:19 | 0:02:22 | |
which is something we all do all the time. | 0:02:22 | 0:02:24 | |
Now, to show you what a diaphragm looks like, | 0:02:24 | 0:02:27 | |
we've got a real one... | 0:02:27 | 0:02:29 | |
..from a pig. | 0:02:30 | 0:02:32 | |
This is the pig's voice box, | 0:02:33 | 0:02:35 | |
this is the trachea, | 0:02:35 | 0:02:37 | |
or the windpipe, | 0:02:37 | 0:02:38 | |
these bits are the lungs, | 0:02:38 | 0:02:39 | |
and then underneath the lungs | 0:02:39 | 0:02:41 | |
in a big muscular sheet, | 0:02:41 | 0:02:44 | |
that is the diaphragm. | 0:02:44 | 0:02:46 | |
You breathe in and out about 20,000-30,000 times a day, | 0:02:46 | 0:02:50 | |
and it's this, | 0:02:50 | 0:02:51 | |
the diaphragm, that makes it all happen. | 0:02:51 | 0:02:54 | |
So after your heart, it's the most important muscle in your body, | 0:02:54 | 0:02:57 | |
because it allows you to breathe. | 0:02:57 | 0:02:58 | |
To see how it works, I've got this nifty little model. | 0:02:58 | 0:03:01 | |
Now, the big bottle is your ribcage, | 0:03:01 | 0:03:04 | |
and these things inside represent your lungs. | 0:03:04 | 0:03:07 | |
Xand, those aren't lungs! Those are my party balloons! | 0:03:07 | 0:03:10 | |
We're using them for a very important scientific demonstration! | 0:03:10 | 0:03:14 | |
-OK. Well, I suppose if it's in the service of science... -Good. | 0:03:14 | 0:03:17 | |
And this at the bottom is your diaphragm. | 0:03:17 | 0:03:21 | |
Now, we tend to think that breathing is all about the lungs, | 0:03:21 | 0:03:24 | |
but the diaphragm is the unsung hero of breathing. | 0:03:24 | 0:03:27 | |
It's what makes it all happen, | 0:03:27 | 0:03:28 | |
and that's why the diaphragm is such an important muscle. | 0:03:28 | 0:03:31 | |
Now, when you breathe in, the diaphragm pulls downwards. | 0:03:31 | 0:03:35 | |
This lowers the pressure inside this chest cavity. | 0:03:35 | 0:03:38 | |
This creates extra space, a vacuum, and air has no option | 0:03:38 | 0:03:42 | |
but to rush in through your mouth and into your lungs | 0:03:42 | 0:03:46 | |
to fill this space. | 0:03:46 | 0:03:47 | |
And then you breathe out again. | 0:03:49 | 0:03:51 | |
Your lungs really are a bit like these balloons - | 0:03:51 | 0:03:53 | |
they have no muscles at all. | 0:03:53 | 0:03:55 | |
They're just like bags, really, and they don't do anything | 0:03:55 | 0:03:58 | |
without the diaphragm. | 0:03:58 | 0:04:00 | |
Which also helps Lucy project her voice. | 0:04:00 | 0:04:03 | |
We've shown you that your vocal cords make sounds by vibrating. | 0:04:03 | 0:04:07 | |
And your diaphragm is one of the most important muscles in your body, | 0:04:07 | 0:04:11 | |
enabling you to take 30,000 breaths a day | 0:04:11 | 0:04:14 | |
and help you hold those long notes. | 0:04:14 | 0:04:16 | |
Chris, I really want to sing now. Can I? | 0:04:16 | 0:04:18 | |
OK, Xand, since you love it so much, | 0:04:18 | 0:04:20 | |
but hold on just one second. | 0:04:20 | 0:04:22 | |
OK, Xand. | 0:04:24 | 0:04:25 | |
HE SINGS IN LUCY'S VOICE | 0:04:25 | 0:04:28 | |
SINGING CONTINUES | 0:04:29 | 0:04:32 | |
-See you next time! -Bye! -Bye! | 0:04:37 | 0:04:40 | |
-Bye! -Bye! -Bye! | 0:04:40 | 0:04:42 |