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

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  • Опубліковано 23 жов 2014
  • Created by Jeff Otjen.
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КОМЕНТАРІ • 443

  • @m0ony1
    @m0ony1 3 роки тому +246

    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
      @XxJaguar22 2 роки тому +2

      Same here. Just started this week xD

    • @m0ony1
      @m0ony1 2 роки тому +1

      @@XxJaguar22 good luck on ur journey

    • @akirak.8742
      @akirak.8742 2 роки тому +1

      Me too!!!

    • @leona17913
      @leona17913 2 роки тому +6

      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
      @36yohannanainggolan45 Рік тому

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

  • @johnmichael5135
    @johnmichael5135 9 років тому +384

    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 :)

  • @treshereux
    @treshereux 7 років тому +629

    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
      @gohna546 7 років тому +14

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

    • @Frederik95Kirk
      @Frederik95Kirk 7 років тому

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

    • @croin6020
      @croin6020 7 років тому +2

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

    • @maryamaftab4580
      @maryamaftab4580 7 років тому +4

      not as thickass as KLM the developing human

    • @asmahaque8558
      @asmahaque8558 7 років тому +2

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

  • @aimanrahim7300
    @aimanrahim7300 4 роки тому +256

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

    • @xenoy-littlebigsnake2564
      @xenoy-littlebigsnake2564 3 роки тому +2

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

    • @monav2686
      @monav2686 3 роки тому +2

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

  • @maalr4466
    @maalr4466 7 років тому +60

    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.

  • @zino-kader
    @zino-kader 9 років тому +13

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

  • @clarissajimenez4108
    @clarissajimenez4108 4 роки тому +2

    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
    @ashcariba 4 роки тому +2

    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!

  • @halonothing1
    @halonothing1 7 років тому +182

    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
      @mariesatow1339 3 роки тому +1

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

    • @ShoubhitPA2004
      @ShoubhitPA2004 2 роки тому +3

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

    • @mariesatow1339
      @mariesatow1339 2 роки тому

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

    • @NurseVale33
      @NurseVale33 2 роки тому +1

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

    • @amsmile-ju9km
      @amsmile-ju9km 2 роки тому

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

  • @shreyasabberwal8950
    @shreyasabberwal8950 4 роки тому +2

    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!

  • @Tallowah21
    @Tallowah21 7 років тому +3

    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.

  • @fardinhamidi8037
    @fardinhamidi8037 6 років тому +4

    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

  • @manuel3812
    @manuel3812 8 років тому +75

    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
      @DStrick2008 8 років тому +3

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

    • @merhoumrayane3400
      @merhoumrayane3400 6 років тому +2

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

    • @elitegaming4262
      @elitegaming4262 3 роки тому +1

      THANKS A LOTT

  • @againstas
    @againstas 9 років тому +5

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

  • @Eleven_20
    @Eleven_20 10 місяців тому

    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. ❤❤❤

  • @kingophir4561
    @kingophir4561 4 роки тому +1

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

  • @yvainec
    @yvainec 7 років тому +4

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

  • @SirPigeonTheKnight
    @SirPigeonTheKnight 9 років тому +10

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

  • @mahmoodabdelkader9509
    @mahmoodabdelkader9509 5 років тому +1

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

  • @bestvideos1897
    @bestvideos1897 6 років тому +1

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

  • @karlocavlina3399
    @karlocavlina3399 4 роки тому +4

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

  • @morezco
    @morezco 7 років тому +6

    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! 🙂

  • @emihlegqola
    @emihlegqola 4 роки тому +1

    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 :)

  • @shaes.204
    @shaes.204 3 роки тому +1

    I’m shook. This was incredibly well taught.

  • @cortexset
    @cortexset 7 років тому

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

  • @jonathanhess4830
    @jonathanhess4830 3 роки тому +1

    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

  • @user-cg2sy5qo1c
    @user-cg2sy5qo1c 5 років тому +2

    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)

  • @guillermopoli8349
    @guillermopoli8349 6 років тому

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

  • @gamesneeder
    @gamesneeder 7 років тому +110

    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
      @_becca_beeboo 5 років тому +13

      They talk about this in the next video on implantation. ua-cam.com/video/1KL8HAm3uSY/v-deo.html

    • @heisnamsanathoisingh
      @heisnamsanathoisingh 4 роки тому +1

      there's another video for that part

  • @lara9149
    @lara9149 7 років тому

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

  • @whelanz3
    @whelanz3 4 роки тому +16

    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.

  • @Min2073
    @Min2073 8 років тому +1

    Thank you for making this process easy to understand!

  • @yaserameen7684
    @yaserameen7684 6 років тому +1

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

  • @bmsampa6385
    @bmsampa6385 3 роки тому +1

    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
    @ritobratochatterjee7358 6 років тому +1

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

  • @gocrazy9955
    @gocrazy9955 6 років тому +2

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

  • @ShioRynnie
    @ShioRynnie 9 років тому +1

    Amazing explanation, really rasy to understand. thank you!

  • @Erupted89
    @Erupted89 6 років тому +96

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

    • @drintrovertofficial
      @drintrovertofficial 3 роки тому

      Yes

    • @lbp7693
      @lbp7693 3 роки тому

      @ابو ليث الخطيب Haibibi salam alaikum yamete kudasai brother

  • @syedaqeel8819
    @syedaqeel8819 7 років тому +1

    I wish we have professors like you.

  • @BERRA647
    @BERRA647 6 років тому +1

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

  • @HARU.7243
    @HARU.7243 3 роки тому +2

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

  • @frenceywilson3314
    @frenceywilson3314 8 років тому +1

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

  • @queen34567
    @queen34567 8 років тому

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

  • @virajj4737
    @virajj4737 6 років тому +1

    Thankyou for the video, sir.🙏🏻

  • @nikkinboots7990
    @nikkinboots7990 7 років тому +2

    Thank you so much

  • @mernaelnosiry9672
    @mernaelnosiry9672 3 роки тому +1

    Thanks for this brief effective explanation ! 👏🏻

  • @kayleeguimont3567
    @kayleeguimont3567 2 роки тому

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

  • @cuiminmayo8646
    @cuiminmayo8646 7 років тому +1

    Excellent ! really love to watch the stuff you put on

  • @liabevilaqua3508
    @liabevilaqua3508 3 роки тому +1

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

  • @collinssian9532
    @collinssian9532 6 років тому

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

  • @user-mu6mx3uh3y
    @user-mu6mx3uh3y 3 роки тому

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

  • @yunogasai4183
    @yunogasai4183 3 роки тому +3

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

  • @dr.purnatamanohar1099
    @dr.purnatamanohar1099 8 років тому

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

  • @uzaira9089
    @uzaira9089 6 років тому

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

  • @kandykean1968
    @kandykean1968 6 років тому

    Thank you so much, this really helped!

  • @tipsandtricks8524
    @tipsandtricks8524 2 роки тому

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

  • @KillerTacos54
    @KillerTacos54 3 місяці тому

    So unbelievably helpful! Thank you so much!

  • @AqsaFatimaMQA
    @AqsaFatimaMQA 5 років тому +2

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

    • @tindykaya
      @tindykaya 5 років тому

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

    • @AqsaFatimaMQA
      @AqsaFatimaMQA 5 років тому

      @@tindykaya Gulf Medical University

  • @husna6797
    @husna6797 2 роки тому

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

  • @andreeast3989
    @andreeast3989 4 роки тому

    So useful. Thank you so much!!!

  • @luckydesilva6733
    @luckydesilva6733 6 років тому +1

    Thank you for explaining sooo nicely. With respect X X

  • @NurseVale33
    @NurseVale33 2 роки тому

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

  • @cookieface5787
    @cookieface5787 4 роки тому

    Excellent video! wow. Thank you!!

  • @chinerommamel2862
    @chinerommamel2862 9 місяців тому

    Amazing video. Easy to understand and straight to point

  • @Peekaboo-Kitty
    @Peekaboo-Kitty Рік тому

    Brilliant! Best explanation on UA-cam!

  • @danikahnpro8810
    @danikahnpro8810 3 роки тому

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

  • @zenaabuther5701
    @zenaabuther5701 7 років тому

    excellent video ....thank you so much

  • @adeelsaleem4242
    @adeelsaleem4242 9 років тому +6

    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 !

  • @khanyisiletricia3946
    @khanyisiletricia3946 6 років тому

    Thanks a lot, this really helped

  • @nirajatrey9878
    @nirajatrey9878 6 років тому +1

    Amazing awesome productive stellar .....

  • @agnestee4261
    @agnestee4261 2 роки тому +2

    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 :(

  • @shahadalmakkivlogs7684
    @shahadalmakkivlogs7684 5 років тому

    Cant thank you enough , god bless

  • @samaruheensiddiqua5342
    @samaruheensiddiqua5342 2 роки тому

    thanks a lot for the pulchritudinous video its really really helpful

  • @shahadalmakkivlogs7684
    @shahadalmakkivlogs7684 5 років тому

    İ love the way he explains

  • @hirachishti1819
    @hirachishti1819 7 років тому

    amazing...thank you sir

  • @apollo7782
    @apollo7782 2 роки тому +1

    Best lecture ever thank you so much

  • @tariqmuhammad3012
    @tariqmuhammad3012 8 років тому +1

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

  • @norway5708
    @norway5708 Рік тому

    thanks, useful for my medical exam

  • @sanchsithrajalingam1767
    @sanchsithrajalingam1767 8 років тому

    Thank You!

  • @mahaalassaf561
    @mahaalassaf561 7 років тому

    Thank you!

  • @deepadangol2475
    @deepadangol2475 6 років тому

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

  • @lalilali8513
    @lalilali8513 8 років тому

    wow..thanks alot it helped...👌👍

  • @bibek9500
    @bibek9500 8 років тому

    Great wrks.... Thnks a lot!

  • @AA-student
    @AA-student 8 років тому

    very good video ,thank you so much

  • @nurulistic
    @nurulistic 2 роки тому

    chefs kiss explanation AMAZING

  • @Olabeu
    @Olabeu 3 роки тому

    best video ever. thanks

  • @edbn24
    @edbn24 7 років тому +1

    excellent vid

  • @alaaqusay9017
    @alaaqusay9017 9 років тому

    thank khan academy .they do amazing job

  • @rajattiwari6076
    @rajattiwari6076 8 років тому

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

  • @HimShaan
    @HimShaan 3 роки тому

    This is so useful!

  • @ayatali7919
    @ayatali7919 6 років тому

    thankyou soo much .. it helped me alot ... ^^

  • @samrasajjad1082
    @samrasajjad1082 7 років тому

    Amazing explaination ever

  • @LolaLobet
    @LolaLobet 4 роки тому

    Thanks so much!!

  • @Keikora
    @Keikora 8 років тому +14

    WHY WON'T MY CLASSES BE LIKE THIS

  • @lardigmer
    @lardigmer 5 років тому

    Thank you a lot!

  • @starrysky1588
    @starrysky1588 7 років тому

    thanks prof!

  • @fnuro.5467
    @fnuro.5467 3 роки тому

    THANK YOU .

  • @arunagupta2422
    @arunagupta2422 6 років тому

    Perfect!

  • @ignaciavelasquez3258
    @ignaciavelasquez3258 4 роки тому

    fantastic!!! thanks!

  • @anteportasbonn
    @anteportasbonn 4 роки тому +1

    The language complements the visualization and vice versa. That's how it should be. Not many can do that.