Have a look at this video. What do you think it is?
Looks a bit disgusting, doesn't it? Did you work out what it
is?
It's our vocal cords!
Although they look gross, vocal cords help us to speak and sing.
Without them, we wouldn't be able to talk to our friends or sing
along to Lady Gaga.
The vocal cords are at the top of the trachea -
the tube leading to our lungs. We speak by blowing air from the
lungs across the vocal cords. The vocal cords vibrate to make
different sounds. The harder you blow air past the vocal cords, the
louder the sound. That's why people sometimes take a deep breath
before shouting. Try it and see!