1:19:50 > 1:19:57.
1:20:05 > 1:20:08# If you've got a question And you don't know where to go
1:20:08 > 1:20:11# Ask Nina for some help Cos she's got a science show
1:20:11 > 1:20:15# She makes sense of her senses While helping all her fans
1:20:15 > 1:20:17# By doing her experiments With potions and with bangs
1:20:17 > 1:20:20- # Touch your tongue.- Tongue! - # Fingers.- Fingers!
1:20:20 > 1:20:23- # Eyes.- Eyes!- Ears.- Ears!- Nose.- Nose!
1:20:23 > 1:20:26# Nina and the Neurons find out what you need to know
1:20:26 > 1:20:29# Nina and the Neurons find out what you need to know
1:20:29 > 1:20:32# Luke, he helps us with our eyes and Felix with our touch
1:20:32 > 1:20:36# Ollie sniffs out smells and scents And Belle, she hears so much
1:20:36 > 1:20:38# Bud is Ollie's brother He helps us with our taste
1:20:38 > 1:20:41# They're Nina's little Neurons And they're coming to your place!
1:20:41 > 1:20:43- # Touch your tongue - Tongue!
1:20:43 > 1:20:44- # Fingers - Fingers!
1:20:44 > 1:20:47- # Eyes.- Eyes!- Ears.- Ears!- Nose.- Nose!
1:20:47 > 1:20:50# Nina and the Neurons find out what you need to know
1:20:50 > 1:20:53# Nina and the Neurons find out what you need to know
1:20:53 > 1:20:55# Oh yeah! #
1:20:58 > 1:21:03Oh, hello! I've been blowing this balloon up for ages,
1:21:03 > 1:21:06and I'm nearly finished.
1:21:06 > 1:21:08BEEPING
1:21:08 > 1:21:12I hear a beep, I see a flash. I wonder what they're going to ask.
1:21:13 > 1:21:16ALL: Hi, Nina!
1:21:16 > 1:21:18Hi, guys!
1:21:18 > 1:21:21- We've got a question for you. - How do we breathe?
1:21:21 > 1:21:24That's a great question. "How do we breathe?"
1:21:24 > 1:21:26It's something we do all the time.
1:21:26 > 1:21:28We should find out how it works.
1:21:28 > 1:21:32Why don't you come down to my lab and we'll investigate?
1:21:32 > 1:21:36- ALL: See you soon, Nina. Bye! - Bye!
1:21:36 > 1:21:41I'll need some help to answer this one. I know just who to ask.
1:21:41 > 1:21:43OK, Neurons. Time to get to work!
1:22:00 > 1:22:03ALL: Neurons at the ready, Nina!
1:22:03 > 1:22:06Today's question is, "How do we breathe?"
1:22:06 > 1:22:10Which Neuron will be most useful to help us find the answer?
1:22:10 > 1:22:12ALL: Me! Me! Me! Oh, me!
1:22:13 > 1:22:15Will it be fabulous Felix?
1:22:15 > 1:22:18I can help so very much, if you need the sense of touch.
1:22:18 > 1:22:23- Will it be beautiful Belle? - I send messages to brain from ear.
1:22:23 > 1:22:25If there's a sound, I help you hear.
1:22:25 > 1:22:30- Will it be lovely Luke? - For looking and seeing, day or night,
1:22:30 > 1:22:33I'll help you with your sense of sight.
1:22:33 > 1:22:34Will it be awesome Ollie?
1:22:34 > 1:22:37If it's pongy or whiffy but you can't tell,
1:22:37 > 1:22:40I help your sense of smell.
1:22:40 > 1:22:43- Or will it be baby Bud? - Sour, salty, bitter, sweet,
1:22:43 > 1:22:45I'm your taste buddy whenever you eat!
1:22:49 > 1:22:53- It's Ollie AND Bud. - CHEERS
1:22:53 > 1:22:59ALL: Go, Ollie! Go, Bud! Go, Ollie! Go, Bud! Go, Ollie! Go, Bud!
1:22:59 > 1:23:03- ALL: Go, Ollie! - Yippee! It's you and me, Sis!
1:23:03 > 1:23:06The question is, "How do we breathe?"
1:23:06 > 1:23:10We breathe through our nose and mouth, so Ollie and Bud will help.
1:23:10 > 1:23:14I better get the lab ready before the Experimenters arrive.
1:23:16 > 1:23:20Freya likes rollercoasters, Wannie likes hummus and bread
1:23:20 > 1:23:23and Laura loves art. They want to know how we breathe.
1:23:23 > 1:23:29Today, Freya, Wannie and Laura become the Experimenters.
1:23:31 > 1:23:34- Hi, guys! - ALL: Hi, Nina!
1:23:34 > 1:23:40Welcome to my science lab. Come in! You asked, "How do we breathe?"
1:23:40 > 1:23:43A great question. Why do you want to know?
1:23:43 > 1:23:45We know we have to breathe.
1:23:45 > 1:23:48But we want to know how we do it.
1:23:48 > 1:23:52Breathing is one of the most important things our bodies do,
1:23:52 > 1:23:54so we should do some investigating.
1:23:54 > 1:23:56Let's start by using our senses.
1:23:56 > 1:23:58ALL: Whoop-woo!
1:23:58 > 1:24:01A senses experiment! We're ready, Nina!
1:24:01 > 1:24:04So, Experimenters, how often do we breathe?
1:24:04 > 1:24:06ALL: All the time.
1:24:06 > 1:24:11That's right. Our bodies are always breathing. Even when we're asleep.
1:24:11 > 1:24:15- Do you know what it is we're breathing in?- ALL: Air!
1:24:15 > 1:24:19That's right. Air is a type of gas that's all around us.
1:24:19 > 1:24:22Air comes in through our nose, or our mouth,
1:24:22 > 1:24:26then travels down this tube called our windpipe,
1:24:26 > 1:24:29till it reaches something called our lungs.
1:24:29 > 1:24:34Let's put our hands on our chests, and take a big breath in and out.
1:24:36 > 1:24:39What could you feel happening?
1:24:39 > 1:24:42It got bigger, and smaller again.
1:24:42 > 1:24:46It sure did, because the lungs inside our chests
1:24:46 > 1:24:49filled up with air.
1:24:49 > 1:24:53Our lungs are a bit like these balloons.
1:24:53 > 1:24:58- If we pull on a balloon, what happens?- Stretchy.
1:24:58 > 1:25:02Yes, balloons are stretchy. And our lungs are stretchy, too.
1:25:02 > 1:25:04As our lung model will show us.
1:25:04 > 1:25:09Imagine these two balloons are our lungs inside our chest.
1:25:09 > 1:25:13- Do the balloons look big or small? - Small.
1:25:13 > 1:25:17They look small right now, as they don't have air in them.
1:25:17 > 1:25:21But if you pull the rubber part at the bottom down, Laura,
1:25:21 > 1:25:25something very interesting might happen.
1:25:25 > 1:25:27What do you see happening?
1:25:27 > 1:25:29Getting bigger and smaller, then bigger.
1:25:29 > 1:25:32Yeah, they're getting bigger and smaller.
1:25:32 > 1:25:37The balloons get bigger, because air is forced into them
1:25:37 > 1:25:41as the rubber is pulled down. This happens in our bodies, too.
1:25:41 > 1:25:44We have a stretchy muscle, just below our lungs,
1:25:44 > 1:25:46called our diaphragm.
1:25:46 > 1:25:49Ooh, that's a tricky word, Nina!
1:25:49 > 1:25:53It is a tricky word, Belle, but important to how we breathe.
1:25:53 > 1:25:59It's the diaphragm that pulls in the air through our nose and mouth,
1:25:59 > 1:26:00down into our lungs.
1:26:00 > 1:26:03Wannie, would you like a go?
1:26:03 > 1:26:05Because our lungs are stretchy,
1:26:05 > 1:26:09they get bigger when they fill up with air.
1:26:09 > 1:26:13- I think it's time for another experiment.- ALL: Yay!
1:26:15 > 1:26:21Our stretchy diaphragm pulls air down into our even stretchier lungs
1:26:21 > 1:26:23through a tube called our windpipe.
1:26:23 > 1:26:26What happens at the bottom of our windpipe?
1:26:26 > 1:26:28It splits in two.
1:26:28 > 1:26:31Yes, it splits in two.
1:26:31 > 1:26:35Then, these two tubes split into more and more little tubes.
1:26:35 > 1:26:42Air we breathe in travels through lots of little tubes in our lungs.
1:26:42 > 1:26:47You each have a balloon filled with air joined onto a tube.
1:26:47 > 1:26:52But the tubes are different sizes. Freya, you have a narrow tube.
1:26:52 > 1:26:55Laura, you have one a bit wider.
1:26:55 > 1:26:57Wannie, you have an even wider tube.
1:26:57 > 1:27:01Air is held in your balloons by these clips.
1:27:01 > 1:27:06You'll release your clips at the same time to let the air out.
1:27:06 > 1:27:10- What will happen? - The balloons will go smaller.
1:27:10 > 1:27:14Yes. When a balloon loses air, it gets smaller, or shrinks.
1:27:14 > 1:27:19Watch carefully to see which balloon shrinks fastest.
1:27:19 > 1:27:22Hands onto the balloons.
1:27:22 > 1:27:24One, two, three, GO!
1:27:30 > 1:27:34- Go!- A-ha!- I knew it! - NINA LAUGHS
1:27:34 > 1:27:38I knew mine was going to be the slowest.
1:27:38 > 1:27:43- Why d'you think that was? - Because the tube is smaller.
1:27:43 > 1:27:48Air didn't move through the narrow tube as easily
1:27:48 > 1:27:50as through the wider tubes.
1:27:50 > 1:27:53This is like what happens if someone has asthma.
1:27:53 > 1:27:55I have asthma, Nina.
1:27:55 > 1:27:59- What does it feel like? - Sometimes it's hard to breathe.
1:27:59 > 1:28:01If someone has asthma,
1:28:01 > 1:28:05the tubes in their lungs can get narrower sometimes.
1:28:05 > 1:28:08This makes it harder to breathe, as air doesn't move
1:28:08 > 1:28:11through the narrowed tubes so well.
1:28:11 > 1:28:13We can use something to help them.
1:28:13 > 1:28:17Do you have your inhaler with you, Wannie?
1:28:17 > 1:28:19- Yes, Nina.- Can I see?
1:28:19 > 1:28:23Brilliant! The inhaler has a special medicine inside it.
1:28:23 > 1:28:28If Wannie pushes on the top, the medicine comes out as a mist
1:28:28 > 1:28:30that she breathes in.
1:28:30 > 1:28:34Never use someone else's inhaler, Nina. That would be dangerous.
1:28:34 > 1:28:37The doctor will give you one, if you need it.
1:28:37 > 1:28:40What happens when you use your inhaler?
1:28:40 > 1:28:42It makes me breathe better.
1:28:42 > 1:28:47Yes, because the special medicine helps widen any narrow air tubes.
1:28:47 > 1:28:50But why do we do all this breathing?
1:28:50 > 1:28:54To find out what happens to the air in our lungs,
1:28:54 > 1:28:59- we need to go somewhere to take our breath away. Let's go!- ALL: Yeah!
1:29:01 > 1:29:05Here we go! I can't wait to see where we'll end up today.
1:29:05 > 1:29:08Nina said it would take our breath away.
1:29:08 > 1:29:12I do hope it doesn't take MY breath away. I don't think I'd like that.
1:29:12 > 1:29:17It's just an expression, Felix. Nina means it'll be exciting.
1:29:17 > 1:29:22Aw! I LOVE being excited! And I think we're here!
1:29:30 > 1:29:32You asked, "How do we breathe?"
1:29:32 > 1:29:38We need to know the answer, after climbing all those stairs.
1:29:38 > 1:29:42We've discovered a breath begins when we breathe air in
1:29:42 > 1:29:46through our nose and mouth. The air then travels down the windpipe
1:29:46 > 1:29:50and splits off into our two lungs.
1:29:50 > 1:29:53Inside our lungs, are lots of little air tubes.
1:29:53 > 1:29:58At the end of the air tubes are some little round things.
1:29:58 > 1:30:01- What do they look like?- Grapes.
1:30:01 > 1:30:04They're actually called air sacs.
1:30:04 > 1:30:07Inside the air we breathe is a gas called oxygen.
1:30:07 > 1:30:11Our body needs oxygen to do lots of different jobs.
1:30:11 > 1:30:15The air sacs take the oxygen out of the air we breathe in
1:30:15 > 1:30:17and give it to our body.
1:30:17 > 1:30:21And we're going to pretend that these blue balloons are oxygen.
1:30:21 > 1:30:24- So, let's get experimenting! - All: Yeah!
1:30:26 > 1:30:30Imagine this lift is our windpipe and we're at the top.
1:30:30 > 1:30:35The lift has a big breath of air inside it
1:30:35 > 1:30:38and your blue balloons are oxygen.
1:30:38 > 1:30:43Our breath will travel down the windpipe, into the lungs. Let's go!
1:30:43 > 1:30:46LIFT: Floor one, doors closing.
1:30:50 > 1:30:55Ooh! I can feel us going down. It's making my tummy feel strange.
1:31:00 > 1:31:05Imagine the big breath is down in the lungs, in one of the air sacs.
1:31:05 > 1:31:07What do the air sacs do?
1:31:07 > 1:31:09They give oxygen to the body.
1:31:09 > 1:31:14That's right! You'll leave your blue oxygen balloons down here
1:31:14 > 1:31:18and swap them for these red balloons.
1:31:18 > 1:31:21Air sacs don't just give the body oxygen it needs,
1:31:21 > 1:31:25they help get rid of something the body doesn't need.
1:31:25 > 1:31:29A gas called carbon dioxide. Get swapping, guys!
1:31:29 > 1:31:32Come on, let's get rid of that carbon dioxide.
1:31:32 > 1:31:34LIFT: Doors closing.
1:31:37 > 1:31:38First floor.
1:31:42 > 1:31:44What a fantastic job you did,
1:31:44 > 1:31:47taking the oxygen down into the lungs
1:31:47 > 1:31:51and bringing the carbon dioxide back up again.
1:31:51 > 1:31:55- Let's go back to the lab. - ALL: Yes!
1:31:55 > 1:31:59# Nina and the Neurons! #
1:31:59 > 1:32:03Your question was, "How do we breathe?"
1:32:03 > 1:32:05I think we've answered it.
1:32:05 > 1:32:09The diaphragm pulls in air through our nose or mouth,
1:32:09 > 1:32:14down our windpipe into our even stretchier lungs.
1:32:14 > 1:32:18Air then passes through little tubes in the lungs,
1:32:18 > 1:32:21until it reaches the tiny air sacs at the end.
1:32:21 > 1:32:25The air sacs take oxygen from the air, and give it to our body,
1:32:25 > 1:32:29then the air sacs get rid of carbon dioxide our body doesn't need
1:32:29 > 1:32:33by sending it back up our windpipe when we breathe out.
1:32:33 > 1:32:37- I hope that's answered your question.- ALL: Thanks, Nina! Bye!
1:32:37 > 1:32:39Bye!
1:32:42 > 1:32:46Find out more about the science that's all around us,
1:32:46 > 1:32:50and go to the Nina section on the CBeebies website. Have fun!
1:32:50 > 1:32:55- Hearts beating.- Lungs breathing. - Fingers feeling.- Mouths eating.
1:32:55 > 1:32:57And don't forget your brain.
1:32:57 > 1:33:00# Brilliant bodies, brilliant bodies
1:33:00 > 1:33:02# Inside and ou-ou-out
1:33:02 > 1:33:05# Brilliant bodies, brilliant bodies
1:33:05 > 1:33:07# Come on, let's find out about
1:33:07 > 1:33:10# Our happy hands and bendy knees
1:33:10 > 1:33:13# Stretchy backs And noses that sneeze
1:33:13 > 1:33:17- # We all have brilliant bodies - Brilliant bodies!
1:33:17 > 1:33:20# Every part has a job to do
1:33:20 > 1:33:23# Even scabs and ear wax, too
1:33:23 > 1:33:28- # We all have brilliant bodies - Brilliant bodies!
1:33:28 > 1:33:30# Brilliant bodies, brilliant bodies
1:33:30 > 1:33:33# Lashes to protect our eyes
1:33:33 > 1:33:36# Brilliant bodies, brilliant bodies
1:33:36 > 1:33:40# And don't forget to exercise. #
1:33:40 > 1:33:42I've had a brilliant day.
1:33:42 > 1:33:46The balloons got bigger when they filled up with air.
1:33:46 > 1:33:48I've had a fabbie day!
1:33:48 > 1:33:53Taking the oxygen balloons down in the lift was amazing! Ha-ha!
1:33:53 > 1:33:57Ah, it's been such a great day, man.
1:33:57 > 1:33:59Lungs are so cool.
1:33:59 > 1:34:03Everyone's body is different, but they're all brilliant.
1:34:03 > 1:34:06- See you again soon. Bye! - ALL: Bye!