Early embryogenesis - Cleavage, blastulation, gastrulation, and neurulation | MCAT

Early embryogenesis - Cleavage, blastulation, gastrulation, and neurulation | MCAT | Khan Academy

Рет қаралды 2,143,809

9 жыл бұрын

Created by Jeff Otjen.
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Пікірлер: 443

@m0ony1 3 жыл бұрын

I remember watching this video 2 years ago when i was a pre-med student and now im watching it again as a med student. Very clear explanation. Thank you!

@XxJaguar22 2 жыл бұрын

Same here. Just started this week xD

@m0ony1 2 жыл бұрын

@@XxJaguar22 good luck on ur journey

@akirak.8742 2 жыл бұрын

Me too!!!

@leona17913 2 жыл бұрын

I am a pre med student and I am also planning to do med I hope I'll be back here as well Congratulations on your journey!

@36yohannanainggolan45 Жыл бұрын

good for u! btw can i be your friend bro?

@aimanrahim7300 4 жыл бұрын

"Suppose you're an egg cell" "Here's a mullberry from my yard to prove it"

@xenoy-littlebigsnake2564 3 жыл бұрын

You Look like a melon And a PanCake And a pancake with caramel syrup

@monav2686 3 жыл бұрын

it made me so happy when he said "here's a mulberry from my yard"

@johnmichael5135 9 жыл бұрын

I love the fact that u are turning this into a story and making us feel like we are the embryo. It really helps when u spice things up like that. I wish my dry, boring professorr wud watch this video and take notes. Thanks a bunch :)

@danyellesod 6 жыл бұрын

LOL @ DRY BORING PROFESSOR

@abouttocum 6 жыл бұрын

IT IS A MOTHER FUCKING STORY.

@windywendi 3 жыл бұрын

Especially since we've all been through this, literally

@leticiagerberalmeida3360 2 жыл бұрын

Oi7

@Lovely-bh3ln 7 ай бұрын

@@windywendiomg true

@treshereux 7 жыл бұрын

this kind of video helps a lot for me, freshman of the medical school, when i couldn't understand every single thing by reading that thick-ass langman book. thank you sooooo much. keep making videos, khanacademymedicine!

@gohna546 7 жыл бұрын

Sef Sefa i hate langman he keeps making new name of every step 😤

@Frederik95Kirk 7 жыл бұрын

Also had to watch this over Langman, great video though, feel more ready for my microscopic anatomy exam in 10 hours haha

@croin6020 7 жыл бұрын

Yep "new names for" Prenotochordal cells .. wtf...

@maryamaftab4580 7 жыл бұрын

not as thickass as KLM the developing human

@asmahaque8558 7 жыл бұрын

guys, in your opinions is KLM better or langman? what do you think?

@halonothing1 7 жыл бұрын

It's weird to think that this has happened to every single person who lives. Yet it seems like such an alien, unfamiliar process.

@mariesatow1339 3 жыл бұрын

agree!! that is one of a reason why the birth is miracle.

@ShoubhitPA2004 2 жыл бұрын

@@mariesatow1339 You've never seen an actual delivery have you ?

@mariesatow1339 2 жыл бұрын

@@ShoubhitPA2004 not yet. I long for the day when I become a doctor and see it :)

@NurseVale33 2 жыл бұрын

Not only person, it happen to any animal too, same process

@amsmile-ju9km 2 жыл бұрын

That is why zoology and human are surprising subject and organisms respectively 🙂

@manuel3812 8 жыл бұрын

As far as I know, the zona pellucida does not simply disappear. Instead the blastoceol cavity continues to expand through trophoblasts, which are epithelium, pumping fluid into the cavity. As the cavity grows, so does the tension the blastocyst imposes on the zona pellucida. Eventually the blastocyst pops through the zona pellucida (termed 'hatching'). Source: Medical School Embryology

@DStrick2008 8 жыл бұрын

+Manuel Armas Yes...The conceptus "hatches" as a blatocyst from the zona pellucida.

@merhoumrayane3400 6 жыл бұрын

yep that's waht happens...was wondering the same thing and there's a lot of detials left behind

@elitegaming4262 3 жыл бұрын

THANKS A LOTT

@maalr4466 7 жыл бұрын

I cannot stress how amazing this video is, what I could read for hours I understood better in 12 minutes watching this! Talk about increasing productivity. Thank you.

@whelanz3 4 жыл бұрын

So what I've learned here...is either you were hungry and had food on the mind when voicing over this, or embryos are just very food-like. We got mulberries, melons, pancakes, syrup, and then I was reminded a bit of a burger and a hot dog.

@gamesneeder 7 жыл бұрын

I wish you would have spoken about the trophoblast differentiating into the cytotrophoblast and the syncytiotrophoblast. But all the same, a very educating video. Thank you.

@_becca_beeboo 5 жыл бұрын

They talk about this in the next video on implantation. kzfaq.info/get/bejne/Z7F8a6ty0pnZg40.html

@heisnamsanathoisingh 4 жыл бұрын

there's another video for that part

@Erupted89 6 жыл бұрын

Great; but you should've added the days as they are always asking for them!

@drintrovertofficial 3 жыл бұрын

Yes

@lbp7693 3 жыл бұрын

@ابو ليث الخطيب Haibibi salam alaikum yamete kudasai brother

@zino-kader 9 жыл бұрын

It never ceases to amaze me how seamlessly you break down just about anything.

@clarissajimenez4108 4 жыл бұрын

I'm a freshman in veterinary school and this is so helpful! Your videos help students of vet med, medicine, physio and everything in between. Amazing job!

@ashcariba 4 жыл бұрын

You explained early embryogenesis in 12 minutes. My professor with over 20 years of experience couldn't explain all this to me in an hour! Thank you!

@shreyasabberwal8950 4 жыл бұрын

Fantastic video! I'm a 1st Year UK Med student who was very confused after Embryology lectures- but this really cleared things up... Thank you!

@fardinhamidi8037 6 жыл бұрын

This is one of the best lessons I`ve ever gotten, very good explanation with some strong ways to memorize the whole system keep doing what you´re doing

@yunogasai4183 3 жыл бұрын

I just got a whole lot of information that lasted for 12 minutes, that may be equivalent to a whole book chapter.

@againstas 9 жыл бұрын

It's actually incredible how simply you explained this! My lecturers made such a hack job of it, confusing everyone!

@Tallowah21 7 жыл бұрын

This video was absolutely amazing. I have been reading my textbook and watching other videos and still didn't get a full understanding as to how the process works. You broke down quite effortlessly and in a manner that even my 6yr old son could understand. Thanks so much for sharing. Please continue to make more videos. I sincerely appreciate them.

@yvainec 7 жыл бұрын

thank you so much, it wasvery useful to see whole picture and helped me to navigate better what happens in this complicated issue

@Eleven_20 9 ай бұрын

I remember watching this video as an undergraduate, now I teach embryology and I’ve come back to watch this video and I’m sure my students would love my explanations and teaching stemming from this video. ❤❤❤

@mahmoodabdelkader9509 5 жыл бұрын

This was the best khan academy vid i've watched so far in any subject. this guy deserves a raise

@bestvideos1897 6 жыл бұрын

This is ever best biology lacture in my whole life. Delivered very simply but in a comprehensive way. Thank for uploading. Its really helpful

@shaes.204 3 жыл бұрын

I’m shook. This was incredibly well taught.

@karlocavlina3399 4 жыл бұрын

So simple yet everything is explained. You saved me a lot of time with this lecture. Thank you good sir :)

@kingophir4561 4 жыл бұрын

Hundred of hours in school vs 12 minutes. Now I fully understand these stages. Thank you Khan! Thanks to you also Doc J!

@SirPigeonTheKnight 9 жыл бұрын

You are better than my university at explaining this!!!!

@Min2073 8 жыл бұрын

Thank you for making this process easy to understand!

@cortexset 7 жыл бұрын

As a medical extern,i abslolutely forgot about the embryogenesis and this video helped me out alot. Keep making videos and make better doctors

@lara9149 7 жыл бұрын

Life-saving video.. I was litterally amazed to how well this was explained (sry for my english)

@guillermopoli8349 6 жыл бұрын

Your explanation was so much better than those from the books I've read you deserve the strongest hug ever

@emihlegqola 4 жыл бұрын

This video was so helpful!! I'm writing my final exam tomorrow and it's a really really good video to use to revise. You explain so well!! Thank youuuuuuuu :)

@morezco 7 жыл бұрын

I got scared when I realized I wasn't subbed yet I wonder why they separate this from the main Khan Academy channel. Great classes! 🙂

@yaserameen7684 6 жыл бұрын

Thank you very much for your brilliant illustration!!! Complex theory simplified!!

@bmsampa6385 3 жыл бұрын

Thank you so much this video as a new health student has helped me where I couldn't understand from my lecturer, this video has made me understand..

@ritobratochatterjee7358 6 жыл бұрын

AWESOME . loved it, made the concepts very clear. good work !

@ShioRynnie 9 жыл бұрын

Amazing explanation, really rasy to understand. thank you!

@queen34567 8 жыл бұрын

I was soooo lost but now I see light at the end of the tunnel. .thnks man you are the best.....

@jonathanhess4830 3 жыл бұрын

I can't thank you enough for saving my exam, I am watching this at 2:30 am in the morning and have a test tommorow, i can feel my stress just going away

@kayleeguimont3567 2 жыл бұрын

I have not watched video by Jeff before, love his way of explaining things tho! Thank you so much!

@syedaqeel8819 7 жыл бұрын

I wish we have professors like you.

@nikkinboots7990 7 жыл бұрын

Thank you so much

@user-cg2sy5qo1c 5 жыл бұрын

Amazing...developmental biology can't get any easier than this bb Apparently I wasn't the only one dissatisfied with my lectures(I'm a pre-med student)

@HARU.7243 3 жыл бұрын

The way you explain it is so amazing.... It's fun to study❤️

@frenceywilson3314 8 жыл бұрын

Great video with a complicated concept simplified!!Good information.Thanks Sir.

@BERRA647 6 жыл бұрын

You made something quite complex into a very simple succession of steps. I might pass my Master exam thanks to you!

@gocrazy9955 6 жыл бұрын

Thanku so much sir. Explained very nicely..no one will dare forget this after watching this video.:)

@KillerTacos54 2 ай бұрын

So unbelievably helpful! Thank you so much!

@dr.purnatamanohar1099 8 жыл бұрын

just awesome.....best vid for last minute revision...thanks a lot.. keep up...

@cuiminmayo8646 7 жыл бұрын

Excellent ! really love to watch the stuff you put on

@virajj4737 6 жыл бұрын

Thankyou for the video, sir.🙏🏻

@mernaelnosiry9672 3 жыл бұрын

Thanks for this brief effective explanation ! 👏🏻

@kandykean1968 6 жыл бұрын

Thank you so much, this really helped!

@user-mu6mx3uh3y 3 жыл бұрын

this is the best video i have ever seen.Thank you very mych,keep doing this amazing job!

@collinssian9532 6 жыл бұрын

thanks for the video it had given us an headache with my friends during our discussion,,,,,,,, God bless you

@liabevilaqua3508 3 жыл бұрын

For sure the best explanation ever. Congrats. Your are super hiper didactic.

@andreeast3989 4 жыл бұрын

So useful. Thank you so much!!!

@tipsandtricks8524 2 жыл бұрын

we need professors like this! not someone who only gives books and let the damn students read everything in it...

@uzaira9089 6 жыл бұрын

Fantastic video. Other people use terms such as "invagination" and here you are talking pancakes. Really simplifies, relates and helps understand. Cheers again.

@xi-caizahasim9095 Жыл бұрын

My textbook just had to make this difficult. khan academy medicine I owe you my biology grade.

@chinerommamel2862 9 ай бұрын

Amazing video. Easy to understand and straight to point

@agnestee4261 2 жыл бұрын

Thank you so much for this video!! I'm in my first year of medical school, and I can't understand a thing in the textbook :(

@luckydesilva6733 6 жыл бұрын

Thank you for explaining sooo nicely. With respect X X

@NurseVale33 2 жыл бұрын

When somebody tell you perfection doesn’t exist, show them this video. Life per se is perfect 💕

@husna6797 2 жыл бұрын

amazing?? so easily understandable thank you so much!!

@Peekaboo-Kitty Жыл бұрын

Brilliant! Best explanation on KZfaq!

@sanchsithrajalingam1767 8 жыл бұрын

Thank You!

@shahadalmakkivlogs7684 5 жыл бұрын

İ love the way he explains

@danikahnpro8810 3 жыл бұрын

omg ...you made it super easy to memorize.....love

@khanyisiletricia3946 6 жыл бұрын

Thanks a lot, this really helped

@shahadalmakkivlogs7684 5 жыл бұрын

Cant thank you enough , god bless

@tariqmuhammad3012 8 жыл бұрын

The time course would've been nice to see, as well.

@mohammed21aa 7 жыл бұрын

very good video, can you do me a favour and make video on how to go back in time so I can choose a course other than medicine. Thanks :)

@AqsaFatimaMQA 5 жыл бұрын

lollll I am doing physiotherapy course yet I still have to learn this

@Kencan254 5 жыл бұрын

Really, do yourself and your unfortunate patients a favour, get out of medicine.

@dr.s.choudhury8089 5 жыл бұрын

😂😂😂😂😂

@katy3901 5 жыл бұрын

@@Kencan254 Chill mate

@emihlegqola 4 жыл бұрын

@@AqsaFatimaMQA I'm doing occupational therapy and I need to know it as well, lol.

@AqsaFatimaMQA 5 жыл бұрын

This video is so much better than the sleep-inducing 2 hours of embryology I had to suffer under my anatomy teacher.

@tindykaya 5 жыл бұрын

Which university r u from ? Cuz I swear i live the exact same thing :)

@AqsaFatimaMQA 5 жыл бұрын

@@tindykaya Gulf Medical University

@mahaalassaf561 7 жыл бұрын

Thank you!

@hirachishti1819 7 жыл бұрын

amazing...thank you sir

@jamescaines8356 8 жыл бұрын

The morula stage has 16 cells and the zona still on it... Also all three layers of the tri laminar disk are derived from the epiblast diving in at the primitive streak. The hypoblast is completely obliterated. That point is important but wasnt made.

@zachnygren6573 8 жыл бұрын

+James Caines, some sources will say that the endoderm is derived from the hypoblast. It depends on the textbook/source you refer to

@DRARANASForTheWellBeing 8 жыл бұрын

+James Caines 32 cell stage is morula

@jamescaines8356 8 жыл бұрын

You're probably right. Med school is generally wrong.

@shanthala1345 5 жыл бұрын

yup my textbook says hypoblast forms amnion (12th grade)

@ArranRWilliamson 4 жыл бұрын

@@DRARANASForTheWellBeing, it's 16: en.wikipedia.org/wiki/Morula

@samaruheensiddiqua5342 2 жыл бұрын

thanks a lot for the pulchritudinous video its really really helpful

@cookieface5787 4 жыл бұрын

Excellent video! wow. Thank you!!

@rajattiwari6076 8 жыл бұрын

Great video sir.....Finally all my conceptsr egarding thid topic got clear. And please elaborate on formation of monozygotic twins.

@zenaabuther5701 7 жыл бұрын

excellent video ....thank you so much

@lalilali8513 8 жыл бұрын

wow..thanks alot it helped...👌👍

@bibek9500 8 жыл бұрын

Great wrks.... Thnks a lot!

@alaaqusay9017 9 жыл бұрын

thank khan academy .they do amazing job

@samrasajjad1082 7 жыл бұрын

Amazing explaination ever

@apollo7782 2 жыл бұрын

Best lecture ever thank you so much

@adeelsaleem4242 9 жыл бұрын

I have one question. When does the blastoppore forms. As in general, we differentiated between dueterosome and protosome on the basis of the fate of blastopore. Is it during the mesoderm formation or what? I am confused with that. Please reply and thanks in advance !

@arunagupta2422 6 жыл бұрын

Perfect!

@nirajatrey9878 6 жыл бұрын

Amazing awesome productive stellar .....

@deepadangol2475 6 жыл бұрын

thank you so much.. you saved me...

@HimShaan 3 жыл бұрын

This is so useful!

@lardigmer 5 жыл бұрын

Thank you a lot!

@LolaLobet 4 жыл бұрын

Thanks so much!!

@starrysky1588 7 жыл бұрын

thanks prof!

@billubiologistbb9191 3 жыл бұрын

I am a teacher i can explain things quite easily and my wife has recently got admission in a medical college .. guess what .. i am teaching her all her subjects before her classes using khan academy and my teaching skills...RIP her classmates Those who read my comment till the last word give me a like so that i can be proud of myself lol

@javisigu4386 Ай бұрын

Gos great!

@user-kr9tk3nr7c 2 жыл бұрын

thanks a lot Embryology is the discipline concerned with the study of embryogenesis, the development of the embryo from a fertilised egg cell. Findings in embryology have helped in the understanding of congenital abnormalities and developing assisted reproduction procedures.