0:00:05 > 0:00:08# If you've got a question and you don't know where to go
0:00:08 > 0:00:11# Ask Nina for some help Cos she's got a science show
0:00:11 > 0:00:15# She makes sense of her senses While helping all her fans
0:00:15 > 0:00:17# By doing her experiments with potions and with bangs
0:00:17 > 0:00:19- # Touch your tongue - Tongue!
0:00:19 > 0:00:20- # Fingers - Fingers!
0:00:20 > 0:00:23- # Eyes.- Eyes! - Ears.- Ears!- Nose.- Nose!
0:00:23 > 0:00:26# Nina and the Neurons find out what you need to know
0:00:26 > 0:00:29# Nina and the Neurons find out what you need to know
0:00:29 > 0:00:32# Luke, he helps us with our eyes and Felix with our touch
0:00:32 > 0:00:35# Ollie sniffs out smells And Belle, she hears so much
0:00:35 > 0:00:38# Bud is Ollie's brother He helps us with our taste
0:00:38 > 0:00:41# They're Nina's little Neurons And they're coming to your place!
0:00:41 > 0:00:43- # Touch your tongue - Tongue!
0:00:43 > 0:00:44- # Fingers - Fingers!
0:00:44 > 0:00:48- # Eyes.- Eyes! - Ears.- Ears!- Nose.- Nose!
0:00:48 > 0:00:50# Nina and the Neurons find out what you need to know
0:00:50 > 0:00:53# Nina and the Neurons find out what you need to know
0:00:53 > 0:00:54# Oh yeah! #
0:00:57 > 0:01:00Hello, there! I'm putting a plaster on my finger.
0:01:00 > 0:01:05I cut it doing an experiment earlier and it was bleeding a little bit.
0:01:05 > 0:01:10I should have been more careful. Silly me. There! That's better.
0:01:10 > 0:01:12BEEPING
0:01:12 > 0:01:16Oh! I hear a beep, I see a flash. I wonder what they're going to ask.
0:01:19 > 0:01:22ALL: Hi, Nina!
0:01:22 > 0:01:26- Hi, guys!- We've got a question for you.- What are scabs for?
0:01:26 > 0:01:30That's a great question! What are scabs for?
0:01:30 > 0:01:31Scabs appear on our skin
0:01:31 > 0:01:35if we cut ourselves or graze our elbows or knees.
0:01:35 > 0:01:39Come down to my lab and we'll investigate!
0:01:39 > 0:01:41ALL: See you soon, Nina! Bye!
0:01:41 > 0:01:43Bye!
0:01:43 > 0:01:48I'll need some help to answer this one, and I know just who to ask.
0:01:48 > 0:01:50OK, Neurons, time to get to work.
0:02:07 > 0:02:10ALL: Neurons at the ready, Nina!
0:02:10 > 0:02:13OK, today's question is - what are scabs for?
0:02:13 > 0:02:17Which Neuron would be most useful in helping us find the answer?
0:02:17 > 0:02:22- ALL: Me, me, me! - Will it be fabulous Felix...?
0:02:22 > 0:02:27I can help so very much, if you need the sense of touch.
0:02:27 > 0:02:31- Will it be beautiful Belle? - I send messages to brain from ear.
0:02:31 > 0:02:34- If there's a sound, I'll help you hear.- Lovely Luke?
0:02:34 > 0:02:37For looking and seeing day or night,
0:02:37 > 0:02:40I'll help you with your sense of sight.
0:02:40 > 0:02:41Awesome Ollie?
0:02:41 > 0:02:46If it's pongy, but you can't tell, my messages help your sense of smell.
0:02:46 > 0:02:47Or baby Bud?
0:02:47 > 0:02:49Sour, salty, bitter or sweet,
0:02:49 > 0:02:53I'm your taste buddy whenever you eat.
0:02:53 > 0:02:55BEEPING
0:02:55 > 0:02:58It's Luke!
0:02:58 > 0:02:59Yes!
0:02:59 > 0:03:03ALL: Go, Luke! Go, Luke! Go, Luke!
0:03:03 > 0:03:06Go, Luke! Go, Luke! Go, Luke!
0:03:06 > 0:03:10Cool, Nina! I'll be looking out to help you!
0:03:10 > 0:03:13Today's question is - what are scabs for?
0:03:13 > 0:03:16As we see scabs on our skin, Luke,
0:03:16 > 0:03:18our sight Neuron, will help us today.
0:03:18 > 0:03:22Right, I need to get the lab ready before they arrive.
0:03:24 > 0:03:28Ross likes motorbikes. Oscar likes birds of prey.
0:03:28 > 0:03:30And Megan loves drama.
0:03:30 > 0:03:33But they all want to know what scabs are for,
0:03:33 > 0:03:38so today, Ross, Oscar and Megan become...the Experimenters!
0:03:38 > 0:03:41- Hi, guys!- ALL: Hi, Nina!
0:03:41 > 0:03:43Welcome to my science lab. Come in.
0:03:43 > 0:03:46You asked what are scabs for?
0:03:46 > 0:03:49It's a great question, but why do you want to know?
0:03:49 > 0:03:54- We're told not to pick them. - What are scabs for, Nina?
0:03:54 > 0:03:57Our brilliant bodies create scabs for lots of good reasons.
0:03:57 > 0:04:01We need to experiment to find out more.
0:04:01 > 0:04:05- NINA LAUGHS - And let's start by using our senses.
0:04:05 > 0:04:10ALL: Woo-hoo! A senses experiment. We're ready, Nina!
0:04:10 > 0:04:13When we cut ourselves or fall and graze our knees,
0:04:13 > 0:04:17something called a scab forms over the cut.
0:04:17 > 0:04:20Scabs are a reddy, browny, purply colour,
0:04:20 > 0:04:24and they usually feel dry and rough on our skin.
0:04:24 > 0:04:27But they do an important job for our bodies.
0:04:27 > 0:04:32- Let's get experimenting!- Yes! - OK, pick up your watering cans
0:04:32 > 0:04:38and when I say go, pour some water into your buckets. Ready?
0:04:38 > 0:04:41Yes!
0:04:41 > 0:04:43OK, one, two, three...go!
0:04:50 > 0:04:55OK, and stop pouring. Lift them up and tell me what you can see.
0:04:58 > 0:05:03- Water.- What's happening to the water? - It's coming out from a hole.
0:05:03 > 0:05:07You're right. There's a hole in all the buckets.
0:05:07 > 0:05:09That's why the water leaked out.
0:05:09 > 0:05:13It's like what happens to our skin when we cut or graze ourselves.
0:05:13 > 0:05:17The cut makes holes in our skin and blood leaks out.
0:05:17 > 0:05:19Because our bodies are brilliant,
0:05:19 > 0:05:25the skin starts making itself better by forming a scab over the hurt bit.
0:05:25 > 0:05:28This next experiment will help explain.
0:05:28 > 0:05:33This is special putty, so roll it around in your hands.
0:05:33 > 0:05:36- It's all gooey!- And sticky!
0:05:36 > 0:05:41Use the putty to cover the holes in the bottom of your buckets.
0:05:46 > 0:05:50The Experimenters are doing a good job with that squidgy putty.
0:05:50 > 0:05:55Well done, Experimenters! Let's test the buckets again.
0:05:55 > 0:05:58Pour in some more water.
0:06:02 > 0:06:06That's it. That's plenty. OK, stop pouring.
0:06:06 > 0:06:11And now, lift up the bucket over the tray and see what happens.
0:06:13 > 0:06:17- So, what's happened? - It doesn't come out.
0:06:17 > 0:06:20Yes! The putty sealed the holes in your buckets
0:06:20 > 0:06:22and stopped the water escaping.
0:06:22 > 0:06:27This is just like what a scab does when we cut or graze ourselves.
0:06:27 > 0:06:30Our bodies form a scab to cover the holes in our skin
0:06:30 > 0:06:32to stop the blood from leaking out,
0:06:32 > 0:06:35because losing a lot of blood is bad for us.
0:06:35 > 0:06:39But the scab forms for other important reasons too.
0:06:39 > 0:06:43To find out more, let's visit somewhere very sporty.
0:06:43 > 0:06:46- Let's go, Experimenters! - ALL: Yes!
0:06:51 > 0:06:55Oh, goody! I love this bit. I wonder where Nina is taking us?
0:06:55 > 0:07:00Nina said it's somewhere fun and sporty.
0:07:00 > 0:07:03Maybe it's a splishy, splashy swimming pool.
0:07:03 > 0:07:08Or a fun gymnasium, with trampolines and roly-poly mats!
0:07:09 > 0:07:15- I think I can smell grass.- We're here, and it does look very grassy!
0:07:16 > 0:07:20This is one of my most favourite experiments ever,
0:07:20 > 0:07:23because we get to play football. Ready, guys?
0:07:23 > 0:07:25ALL: Yes!
0:07:40 > 0:07:42Ooh, I think they're about to score!
0:07:45 > 0:07:47Goal! ALL: Yes!
0:07:48 > 0:07:52- Oh, dear! My foot has accidentally damaged the grass.- Wow!
0:07:52 > 0:07:57It looks like the grass has been scratched and cut open.
0:07:57 > 0:08:01Yes, it'll need some time to grow back and get strong again.
0:08:01 > 0:08:07Don't worry. There is something we can do to help the grass grow back.
0:08:07 > 0:08:11- Hi, David!- Hi, Nina.- It's David's job to look after the grass here.
0:08:11 > 0:08:15- Show us what you do to help the grass grow back.- Of course.
0:08:15 > 0:08:18This special material is used on football pitches
0:08:18 > 0:08:19and sports grounds
0:08:19 > 0:08:23to help protect the damaged grass until it grows back.
0:08:23 > 0:08:29A bit like this plaster protects the little cut on my finger.
0:08:29 > 0:08:32When we get a scab, its job to protect the cut or graze
0:08:32 > 0:08:34until it gets better.
0:08:34 > 0:08:39So scabs are like the body making its very own plasters.
0:08:39 > 0:08:41That's right, Felix.
0:08:41 > 0:08:45Let's see if we can find more damaged grass. Let's go!
0:08:45 > 0:08:48- Bye, David!- Bye.
0:08:50 > 0:08:52Oh, look!
0:08:52 > 0:08:56This material has been here for a few weeks.
0:08:56 > 0:08:58Let's see if it's done its job.
0:08:58 > 0:09:03- It's grown back! - There's no damaged bits.
0:09:03 > 0:09:06The material's done a great job of protecting the grass,
0:09:06 > 0:09:11so it can grow back. Scabs protect our skin, allowing it to grow back.
0:09:11 > 0:09:13It's important not to pick scabs,
0:09:13 > 0:09:16because the skin won't have had time to grow back properly.
0:09:16 > 0:09:20When the skin is strong enough, it'll fall off all by itself.
0:09:20 > 0:09:23There's something else that's brilliant about scabs,
0:09:23 > 0:09:27- so let's go back to my lab for one final experiment.- ALL: Yeah!
0:09:28 > 0:09:32One reason I've put a plaster on my cut finger
0:09:32 > 0:09:35is to stop germs getting in that could cause an infection.
0:09:35 > 0:09:42- An infection? That sounds serious.- It can be.
0:09:42 > 0:09:44Infections start when tiny,
0:09:44 > 0:09:50invisible bugs called germs get into our bodies and make us feel ill.
0:09:50 > 0:09:55Our brilliant bodies create scabs to act like a protective shield
0:09:55 > 0:09:57so nasty germs can't get through.
0:09:57 > 0:10:01It's so important not to pick scabs. If we pick them,
0:10:01 > 0:10:04the cut might become infected.
0:10:04 > 0:10:07Let's pretend this is a red cut on the skin.
0:10:07 > 0:10:13And pretend each of these green balls is a nasty germ.
0:10:13 > 0:10:16It's your job to throw the balls
0:10:16 > 0:10:19and get as many germs into the cut as possible.
0:10:19 > 0:10:21- Everybody ready?- Yes!- Go for it.
0:10:28 > 0:10:34Oh, there's another germ in the cut. And another one!
0:10:34 > 0:10:38So, what happened to the green germ balls?
0:10:38 > 0:10:41- Lots of the balls got in the cut. - Right!
0:10:41 > 0:10:45If this was a real cut, that could cause an infection.
0:10:45 > 0:10:50They got into the cut because there was nothing to stop them.
0:10:50 > 0:10:53What if there was a big scab over the cut?
0:10:53 > 0:10:57- The balls won't get in? - Well, let's see.
0:10:58 > 0:11:04This time, our volunteer super-scab, Megan, will help protect the cut
0:11:04 > 0:11:08with this big umbrella, which is our pretend scab.
0:11:08 > 0:11:14Let's see what happens. Ready to throw? One, two, three...go!
0:11:22 > 0:11:26Hooray! It's working! The germs can't get through.
0:11:32 > 0:11:35That was great fun! But what happened?
0:11:35 > 0:11:39- The umbrella kept the germs out. - That's right.
0:11:39 > 0:11:42If we imagine the umbrella was a scab,
0:11:42 > 0:11:46it was like a shield, stopping germs getting into the cut,
0:11:46 > 0:11:48where they could cause infection.
0:11:48 > 0:11:51# Nina and the Neurons! #
0:11:53 > 0:11:55So your question was -
0:11:55 > 0:11:58what are scabs for? I think we've answered it.
0:11:58 > 0:12:03Scabs do lots of very important jobs for our brilliant bodies.
0:12:03 > 0:12:05They stop blood escaping from a cut,
0:12:05 > 0:12:10they help our skin grow back, and they stop germs getting in.
0:12:10 > 0:12:13Scabs are like our body's natural plaster and will fall off
0:12:13 > 0:12:18by themselves when they're finished doing their important jobs.
0:12:18 > 0:12:22- So I hope that's answered your question.- ALL: Thanks, Nina! Bye!
0:12:22 > 0:12:25You're welcome! Bye!
0:12:29 > 0:12:33Want to find out more about the science all around us?
0:12:33 > 0:12:37Go to the Nina section on the CBeebies website. Have fun!
0:12:37 > 0:12:42- Hearts beating.- Lungs breathing. - Fingers feeling.- Mouths eating.
0:12:42 > 0:12:44And don't forget your brain.
0:12:44 > 0:12:46# Brilliant bodies, brilliant bodies
0:12:46 > 0:12:49# Inside and ou-ou-out
0:12:49 > 0:12:52# Brilliant bodies, brilliant bodies
0:12:52 > 0:12:54# Come on, let's find out about
0:12:54 > 0:12:57# Our happy hands and bendy knees
0:12:57 > 0:12:59# Stretchy backs And noses that sneeze
0:12:59 > 0:13:04- # We all have brilliant bodies - Brilliant bodies!
0:13:04 > 0:13:07# Every part has a job to do
0:13:07 > 0:13:10# Even scabs and ear wax too
0:13:10 > 0:13:14- # We all have brilliant bodies - Brilliant bodies
0:13:14 > 0:13:18# Brilliant bodies, brilliant bodies
0:13:18 > 0:13:19# Lashes to protect our eyes
0:13:19 > 0:13:22# Brilliant bodies, brilliant bodies
0:13:22 > 0:13:26# And don't forget to exercise. #
0:13:26 > 0:13:28It's been such a great day, man!
0:13:28 > 0:13:33Watching the Experimenters sealing up the holes in their buckets.
0:13:33 > 0:13:36I really enjoyed myself today.
0:13:36 > 0:13:42The Experimenters helped protect the grass so it can grow back again.
0:13:42 > 0:13:49I've had a fabby day! The umbrella scab kept those nasty germs out.
0:13:49 > 0:13:50Scabs are amazing!
0:13:50 > 0:13:53Remember, everyone's body is different,
0:13:53 > 0:13:55but they're all brilliant!
0:13:55 > 0:13:57See you again soon. Bye!
0:13:57 > 0:13:59ALL: Bye!