Speaker 2
And when you take a breath in, that upside down u flattens out and it creates more space in your chest so that air comes rushing through your nose and your mouth, whatever's open. And then when you exhale or take a breath out, that muscle squeezes back up into its u-shaped form, and all of
Speaker 1
the air gets pushed out of the lungs. There are other muscles in between your ribs that help to move your rib cage as you breathe. The
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whole point of breathing is to bring an oxygen, which our bodies need, to power all the amazing things they do. And breathing
Speaker 1
out is how we get rid of some of the waste produced by the same processes. Let's follow
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some air molecules on their journey into your lungs and around your body. Hello, hello, hello. I'm
Speaker 7
an oxygen molecule. The air is made up of other kinds of gases, too, like carbon dioxide, and nitrogen, and argon. Yay! But let's face it, I'm the only one that matters here. Hey! What? Sorry, not sorry. So anyway,
Speaker 1
we breathe air in through our mouths or noses. Woo! Here
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One of the things that's really cool about the nose is it has a lot of blood vessels that helps to warm the air. It's
Speaker 7
cozy in here, and hairy,
Speaker 2
and boogery. The air travels from your nose down your trachea. That's the windpipe in your throat.
Speaker 1
And then the trachea branches off into bronchi. There's a tube that leads to your left lung, and a tube that leads to your right lung. Whee! I made
Speaker 7
it to the lungs. It's hard to pick a favorite. The left lung has better ambiance, but the right lung has better Wi-Fi reception.
