0:00:02 > 0:00:04- Are you ready for our Ouch Snips? - Snip!- Ouch!- Exactly!
0:00:08 > 0:00:10When you were in your mum's womb...
0:00:19 > 0:00:20Keep watching to find out!
0:00:23 > 0:00:25Right, here you go, Chris.
0:00:25 > 0:00:28- You can get a nice close look at my belly button with that.- Whoa!
0:00:28 > 0:00:29I think I've missed something.
0:00:29 > 0:00:32Why on earth would I, or anyone, want to look at your belly button?
0:00:32 > 0:00:35Because did you know that your belly button used to be
0:00:35 > 0:00:37your mouth and your bum?
0:00:37 > 0:00:41OK, yes, that's true, but we still don't need to look at your
0:00:41 > 0:00:44belly button, Xand, because I've got something much more impressive.
0:00:44 > 0:00:46Take a look at this.
0:00:47 > 0:00:48Whoa!
0:00:48 > 0:00:51That is much more impressive than my belly button
0:00:51 > 0:00:57because this is a real human placenta and umbilical cord.
0:00:57 > 0:01:00These amazing organs are what keep a baby alive
0:01:00 > 0:01:02and able to grow inside its mum.
0:01:02 > 0:01:06The placenta's job is to absorb oxygen and vital nutrients from
0:01:06 > 0:01:10the mum's blood and deliver them to the baby via the umbilical cord.
0:01:10 > 0:01:14As well as this, the umbilical cord also carries waste products -
0:01:14 > 0:01:17that's wee, poo and carbon dioxide - away from the baby,
0:01:17 > 0:01:19down the umbilical cord
0:01:19 > 0:01:22and through the placenta into Mum's body for her to get rid of.
0:01:22 > 0:01:25Now, once you're born, you don't need these any more, which is
0:01:25 > 0:01:28why we have these to show you.
0:01:28 > 0:01:31This placenta is absolutely amazing.
0:01:31 > 0:01:34But, you know, I've always said that there's really only one thing
0:01:34 > 0:01:36better than a real human placenta -
0:01:36 > 0:01:40- and that is a double human placenta from twins.- Wow!
0:01:40 > 0:01:43This must have been what our placenta looked like
0:01:43 > 0:01:46- when we were inside our mum. - Absolutely.
0:01:46 > 0:01:49After you're born, the cord gets snipped off, leaving you
0:01:49 > 0:01:54with your belly button but, until then, this cord is your lifeline.
0:01:54 > 0:01:58But what does a baby look like when it's actually inside its mum?
0:01:58 > 0:02:03- We're going to show you.- Now, what we've got here is a real live baby.
0:02:03 > 0:02:06Xand, this isn't a baby. This is Amelia, and she's a grown-up.
0:02:06 > 0:02:09That's true. Thanks very much for coming into the lab, Amelia.
0:02:09 > 0:02:13- Thanks, Amelia.- But, actually, inside Amelia is a real live baby.
0:02:13 > 0:02:14Ah!
0:02:14 > 0:02:16And ordinarily, of course, we couldn't show you that baby,
0:02:16 > 0:02:19but we have this ultrasound scanner.
0:02:19 > 0:02:22- So, Amelia, are you having a boy or a girl?- A boy.- A boy!
0:02:22 > 0:02:26- Amelia, how many weeks' pregnant are you?- 29 weeks.
0:02:26 > 0:02:28At this stage, a baby's organs are developed.
0:02:28 > 0:02:32Just here, what you can see beating is Amelia's baby's heart.
0:02:32 > 0:02:34Wow, amazing!
0:02:34 > 0:02:37The white things here are his bones, so that's his backbone.
0:02:37 > 0:02:39Very clearly, you can see that there.
0:02:39 > 0:02:43Surrounding the baby, these big black patches are liquid.
0:02:43 > 0:02:46And that's cos the baby's sitting in a thing called the amniotic sac,
0:02:46 > 0:02:50so it's sitting in a big sac full of fluid that protects
0:02:50 > 0:02:52it from bumps and from infection.
0:02:52 > 0:02:56The one massive difference between being inside Amelia
0:02:56 > 0:02:59and being out in the world is that this little boy is breathing
0:02:59 > 0:03:03entirely through his umbilical cord, through his belly button.
0:03:03 > 0:03:07But what we really want to know is, what does he look like?
0:03:07 > 0:03:10So we've been able to do a 4-D scan.
0:03:10 > 0:03:134-D scans provide an incredible lifelike
0:03:13 > 0:03:16image of the baby inside the womb.
0:03:16 > 0:03:18You can see his eyes, his nose and his little mouth.
0:03:18 > 0:03:20And there's another really nice thing here.
0:03:20 > 0:03:24He has found another use for his placenta because, as well as giving
0:03:24 > 0:03:29him all his oxygen and nutrients, he's also using it as a pillow.
0:03:29 > 0:03:31Amelia, thank you so much for letting us meet him.
0:03:31 > 0:03:34- Thanks very much.- No problem.
0:03:34 > 0:03:37We've shown you the incredible organs that keep you alive
0:03:37 > 0:03:41and enable you to grow before you're born inside your mum.
0:03:41 > 0:03:45The placenta and the umbilical cord bring nutrients and oxygen
0:03:45 > 0:03:48and take away waste - everything a baby needs.
0:03:48 > 0:03:52But why are some belly buttons innies and some outies?
0:03:52 > 0:03:54Let's head to the Ouch And About Clinic.
0:03:54 > 0:03:57So, Anastasia, what's brought you to the Ouch Mobile today?
0:03:57 > 0:04:00All my friends in my school have an innie belly button,
0:04:00 > 0:04:04- but I have an outie. - What's the diagnosis, Doc?
0:04:04 > 0:04:05Sounds to me like a case of...
0:04:09 > 0:04:11Spot-on!
0:04:11 > 0:04:13That is a very impressive outie belly button and,
0:04:13 > 0:04:14after you're born,
0:04:14 > 0:04:16you don't need your umbilical cord,
0:04:16 > 0:04:17so we clamp it off,
0:04:17 > 0:04:19and the cord just dies and falls off.
0:04:19 > 0:04:22And, usually, when things die and drop off,
0:04:22 > 0:04:23you get a bit of a scar formation.
0:04:23 > 0:04:26That scar tightens up and pulls the belly button in but,
0:04:26 > 0:04:28in lots of people, that doesn't happen.
0:04:28 > 0:04:30But it's not a problem - it's completely normal.
0:04:30 > 0:04:34- In fact, it's quite special. - I'm special!
0:04:34 > 0:04:36So the next time you're looking at your belly button, remember -
0:04:36 > 0:04:39it used to be your mouth and your bum!
0:04:39 > 0:04:42And, personally, I think it makes a rather good nose.
0:04:44 > 0:04:47- See you next time!- Bye!- Bye!
0:04:47 > 0:04:49- Bye.- Bye.- Bye!
0:04:49 > 0:04:51- Bye.- Bye!
0:04:51 > 0:04:53THEY MOUTH