Why You Didn’t Die at Birth – Smarter Every Day 42


Hey it’s me Destin. Welcome to Smarter Every Day. So today’s episode’s a little bit different. I have a question about breathing. It’s pretty simple. See our bags are packed and we’re about to go to the hospital to have our third child, and my question is this. How do you go from, this. My baby, in my baby. To this. Now 72 hours ago, my son was inside my wife, and now he’s not. He’s no longer in a liquid environment, he is in a gaseous environment. So something has to change, and in fact it’s awesome. To learn more about this let’s go talk to somebody that’s smarter than me. Well, my wife could do it but she’s tired. Goodnight
-Goodnight. Alright, so to figure out how babies go from living in a liquid environment to an air environment we had to come to smart guy’s house, so we came to a doctor’s house. Spiral staircase, you know he’s smart. So, let’s go check him out. Hey how’s it going?
-Hey Destin. So this is Dr Schuster, and Dr Schuster is, a baby delivery doctor we’ll call you for the video. -Alright
So, he also plays music, so that lets you know that he’s really really smart. So we’re gonna get some info from him. [music] OK so my question is pretty simple. How do we go from breathing fluid inside the mother’s womb, to breathing air?
-As the baby’s coming out, and gets squeezed as it’s coming through the birth canal. All that fluid that’s been in the lungs which is the urine from the baby and the poop from the baby, I mean all the bad stuff. Once they get squeezed that stuff comes out and that baby takes that very first gasp, that gasp of, oxygen. The thing that, that baby needs. That triggers huge changes in the circulation of baby, and that’s what allows everything to start working, the baby’s breathing on it’s own then. So there’s actually like a switch that’s flipped or something when the baby breathes for the first time?
-A couple of valves that change the circulation, change the plumbing if you will, in the heart.
Really. So where are these valves these valves are actually in the heart?
-The top half of the heart, yeah. There’s something called the foramen ovale, which is just a big flap that sits between the right and left atrium. It closes, once that baby gets that first little bit of oxygen, that first breath.
OK so that’s pretty amazing. So the first time the baby takes a breath, and that’s why that first cry is so special, becase that’s actually [clicks fingers] the moment where the baby’s, autonomous.
-It’s all breathing. Yeah it goes from breathing it’s own poop, to breathing real oxygen, the real nutients that it needs for life.
Oh that’s awesome. Thank you very much.
-Any time. Glad to do it. Alright, we got a little man. Let’s check him out. He’s alive and well and his lungs are working and he’s breathing air. One thing that happened right when he came out is, this right here. After he started squealing a little bit, I could hear that [clicks fingers] change when he went from fluid to, air. The nurse brought him over here and she stuck this tube down his throat, and she starts sucking amniotic fluid. This little guy started telling us what he though about everything. So check him out. Get in there, see his face. Mmmhmm.. That’s what I’m talking about. Check this out. It’s an ultrasound from 5 months ago when he was still in the womb. This is real data. If you look close you can see all four chambers of the heart. If you look even closer you can see that little thing that Dr Schuster was talking about. OK I didn’t understand that so I had to get my wife to put it on engineering paper so I could figure it out. So in your heart you have four chambers, and the blood, as it exits the lungs, it goes through the heart and comes back to your body. And after it exits your body, it goes back through the heart and then goes back to the lungs. We all know this, but here’s the deal with the heart before the baby comes out of the womb. You have something here called the foramen ovale, and you have here something called the ductus arteriosus. [newborn noises in background] I hear you. buddy, hold on. So what’s going on here is, before birth the foramen ovale and the ductus arteriosus divert blood from the lungs, so what that means is only about 7 percent of the blood flow goes to the lungs. [infrant crying]
Daddy’s here, hold on. So, basically, before birth the lungs are really really small. They’re not inflated, because the foramen ovale and the ductus arteriosus which is right here, diverts that blood flow. So once it flips over, the foramen ovale closes in about an hour, and the ductus arteriosus goes away and becomes a ligament after about 5 days. I think this is really awesome. You can see that the blood flow goes back to 100 percent for the lungs, and the.. Alright, I’ll.. [baby crying] I can get him.
You’re getting Smarter Every Day. The nurses are gone, so I started messing around with their stuff.
Woah. Check that out. Alright.
Now we turn on a super light. This is , this is active tracking.
You asleep? -Not any more.
Just bear with me. Look at this, I found a magic wand. What? Alright so watch this. So, there’s a big light spot, and if I hold the magic wand at the light spot, and I start blinking away, the lights will follow the magic wand. It tracks it. So it’s actively tracking this bulb. [ Captions by Andrew Jackson ] Captioning in different languages welcome.
Please contact Destin if you can help.

100 Replies to “Why You Didn’t Die at Birth – Smarter Every Day 42”

  1. I have heard that they start taking their first breath's because of the fact that the umbilical cord is cut. That is extremely painful and makes the baby cry, which inflates their lungs. I don't really know about it.. but I did almost die while being born. The umbilical cord was around my chest and neck. It made it so I could not breath. !?!? Well, not everyone is lucky.

  2. Ok, so if the baby "jump starts" when fluids get pushed from his body because he gets squeezed in the birth canal.. then how come they don't die when a woman gets a C-section ? does someone then squeeze the baby in order to "jump start" him ?

  3. "I had to have my wife put it on engineering paper so I could figure it out"uses crayon to explain…..

  4. "72 hours ago my son was in my wife" and 9 months ago you were in your wife! the wonders of the world are truly amazing

  5. My flap didn’t close when I was born and I had to get heart surgery in order to get an implant that would close it

  6. So in a shtf type scenario… blizzard has roads closed or whatever. The baby pops out at home n has problems breathing… do you not cut the umbilical? Put mom n baby in a warm bath? Give the baby an e tea couple hard whacks on the back n more frequent suctioning? Rare instance when the kiddo’s having trouble breathing n no access to hospitals. Some way to keep using the valves until a professional can assist. Ty!

  7. Oh my….that little face…my three boys were that tiny only a few years ago! My youngest just turned two, and it's always amazing to see little tiny babies!

  8. Is it possible for humans to ever be able to learn or train them selves to “flip the switch” again as an adult? It’s a stupid question but I’m curious.

  9. That light controller is almost is interesting has the whole birthing process you explained I never knew that about newborns
    It's amazing the human race made it so long ago
    no wonder the infant mortality rate was so high in the past
    we had no idea what was going on

  10. What about when a baby is delivered via C-section? I imagine that the process is the same, but the "squeezing out pee and poo" portion of a natural birth isn't the same. Just more fluid pulled out using that device you showed earlier?

  11. So basically, if anyone can open that thing that's closeing you breathe oxygen for the first time, humans can theoretically breathe under water, and then they'll breathe oxygen and it'll open again and we can breathe oxygen again, how no one thought about it

  12. Hold on baby daddy's doing science,you'll learn soon enough the rules of my domain 1) science before crying babies 2) I will use you in my you tube experiment videos you have no choice all must obey the laws of Science man

  13. Awesome video Destin! I never really thought about how complex it is and you explain things to help people understand by simplifying it. Keep them coming buddy!!

  14. Just subscribed, enjoy your choices of topics. Especially the scripture verse at the end. Maranatha……

  15. So you said it takes an hour for the flap to close , does this mean that a new born baby for about an hour can not Drown? And I mean this in all seriousness, I’m not trying to be sick or twisted, but if the baby is essentially breathing liquid while inside of mom when it comes out and the flap is still in the “ fish” mode , (meaning breathing underwater ) is it possible that the baby could still breath under water? Another reason I ask this question is because I have heard of mothers giving birth in bath tubs and swimming pools and I’m always like wow that has to be dangerous because baby’s breath when they come out , couldn’t that drown him or her ..This is one question I have thought about for a long time , how do baby’s breath whilst still in the mommy .. wow the human body is amazing

  16. very good work man but if you call this as Smarter Every Day than its a big NO NO, everyone watching this video should know this already.

  17. OMG -I know I’m a little late to the party here, and there’s probably no body left here to read this – this is an awesome topic, but you missed some of the coolest stuff about this. First, you explain the fact that the baby’s heart bypasses the lungs when in the womb, but you don’t explain that it is bypassing because the baby’s system is pumping the baby’s blood through the umbilical cord to the placenta so that it can get oxygenated there. And the realization that the only way the baby’s blood could possibly get oxygenated at the placenta is because the baby’s blood must have a higher affinity for binding oxygen than the mother’s blood or else it wouldn’t be able to gather oxygen for the baby to use in the womb. And consider that once the baby’s blood has higher binding affinity for oxygen, what that could mean once it hits 20% oxygen in the atmosphere at the lung interface at birth. Which leads to the incredible fact that the baby converts it’s entire blood from higher oxygen affinity prenatal blood to regular blood that works with lungs and atmosphere incredibly fast right after that first breath. Yeah. If you think what that takes on a molecular level and on a physiological level, it is freakin awesome.

  18. This is something I always wondered about but just always forgot or never got around to looking it up. Thanks for making me smarter on this day, Destin

  19. 5:29 wife: "I'm tired, I just had a baby, turn those lights off!"

    Dustin: "This video is gonna pay for that baby"

    Wife: "Geek on"

  20. I learned alot about this subject. My son has HLS. Hypoplastic left heart syndrome. Look it up. It will facinate you

  21. Dude, you’re crazy smart, but I can almost guarantee you’re not smart enough to know just how freaking awesome your own video is. I know this is relatively old content, but it’s off the scale good. Keep on cranking out arguably the best stuff on YT.

  22. I mean it was cool he was playin the guitar for about 5.5 seconds…. then it just made you look conceited and full of yourself lol. (This comment is about the doctor if you haven’t watched the video.)

  23. Has anyone else looked up the Bible verses at the veeeery end of your videos? Thanks. Love "em all! This is a favorite.

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