The Process of Gastrulation

This video shows the process of gastrulation, in which the bilaminar embryonic disc undergoes reorganization to form three primary germ layers. Note: Our anatomy team is aware of the left and right labelling issue at 1:06 - the labels should be the other way around. Thank you to anyone who provided feedback on this error. Our team is currently working to resolve it, and we will provide a link to an updated movie as soon as possible.
This is just one of the animations from Primal Pictures' 3D anatomy and physiology platform. For more or to take a free 24 hour trial, please visit www.primalpictures.com or contact [e-mail].

[@alexterrieur8834]

2h of lecture in 3min Tanx

[@JoKu2311]

Fr this video is incredible. Throughout 5h of embryology lectures, the two videos shown from this channel were the only things I truly understood two years ago. Now I‘m studying for an exam and this video is still gold.

[@anshi5098]

I couldnt understand gastrulation just by reading about it, this cleared all my doubts. :)

[@maryc5905]

Thank you for this video!!! So much clearer than reading from a textbook

[@amnasabir9992]

I was so confused about cranial and caudal ends. The way you rotated it and showed it, now I understand what those images in the books taken from different angles mean.

[@princetamrac1180]

Incredible video. Thank you so much. Perfect for refreshening my knowledge without painfully collecting information from textbooks for 2 hours

[@lisaitvvlv6519]

It is seriously so helpfull to see this in video rather than reading a text. Very clear too, understood everything even though English is not my first language. Thanks!

[@beatrizpassinho3919]

Perfect: the only possible word for this video. Loved it! Thanks a lot

[@muktalale2027]

Thank you soo much!helped me a lot!

[@tychoderkommentator2989]

Thank you so much. Now I only have to translate the technical terms, but without this I think I would have never understood.

[@yashalali7921]

One of the best ways to demonstrate.

[@shraddhakumari7731]

Beautiful! Thank You very much

[@AdityaThakur-jb6sx]

Thank you veryy much!!!! Helped me a lot for my exam!.....

[@andacdrms]

So much thanks for this video, it helps a lot.

[@silvertix2996]

MILLION TIMES BETTER THAN A TEXTBOOK

[@aaronzhao7127]

Thank you so much, great video!

[@amphitrite2398]

thank you🌼

[@Ginatonic99]

also very helpful for vet med students :)

[@rinkiverma4402]

Thanks sir for your help😊

[@priyankadube1888]

Thank you so much sir

[@user-ir4hd2zn5v]

thank you so much for such a helpful video !!!!!

[@deepaksoner4034]

amazing video...thanks

[@ghadeerbadr7242]

THANK YOU SO MUCH

[@angelghaemi8931]

im a first year medical student and this is so helpful!! thank you

[@user-wz3nw2qn9x]

In the same time when you write this comment, I was in the first medical college else, and now, I am in second stage, What about you?? what happen with you in medicine??

[@user-up4eg4uh7i]

Thank you so much this was very clear

[@girijamuniramaiah4884]

So the endoderm proper is formed from the proliferating primitive groove cells and the ectoderm proper from the epiblast?

[@muskanfatima4586]

please tell about the mechanism of cell polarization during gastrulation

[@Perspicace23]

thnkyou it help me a lot

[@vlog-di9nu]

Thanks the video is amazing

[@sangeetbhatia5994]

really helpful

[@masumrabbani9996]

Thank you so much

[@shivisrivastav6533]

Is there any video for neurulation???

[@johntindell9591]

Thank you very much.

[@tamalimandal1239]

thank u so much....so helpful

[@sawerarehman4685]

Its reallly helpful.Animations helps aloot.......

[@wallybandaqumayo6536]

Thank you So much

[@labeebaltaf8781]

Thanks. ❤️

[@kittukittu3167]

Thank u sir it is really very helpful 👍😁

[@agilwijaya7782]

thank you

[@merrykerry3587]

nice video... it so helpful

[@Kiran.2020]

You are the best ❤️

[@satyasmitabehera2037]

Awesome

[@mortezavlpr4880]

very helpful

[@Rupeshgamer-dz5dk]

Thanks

[@Dani-cr2kd]

Al final de la segunda semana de desarrollo, se formó el disco embrionario bilaminar que consiste en hipoblasto y epiblasto. A lo largo de la tercera semana de desarrollo, este disco bilaminar se diferencia para establecer tres capas germinales primarias. (proceso conocido como gastrulación). Alrededor de los 15 días después de la fertilización, se forma una estructura engrosada a lo largo de la línea media en el epiblasto cerca del extremo caudal del disco embrionario bilaminar. Esto se llama la línea primitiva. En esta etapa, la línea primitiva de la formación define los ejes principales del cuerpo del embrión, incluidos los extremos craneales (hacia cabeza) y los extremos caudales (hacia la cola), así como los lados izquierdo y derecho del embrión. en el extremo craneal del disco embrionario, la línea primitiva se expande para crear un nodo primitivo, que contiene una depresión circular, conocida como fosa primitiva. esta depresión continúa a lo largo de la línea media del epiblasto, hacia el extremo caudal del linea formando un surco primitivo. Una vez formadas, las células del epiblasto migran hacia el interior hacia la línea, se desprenden del epiblasto y se deslizan debajo de él, hacia el interior del embrión. Este proceso se conoce como invaginación. estas primeras células para invaginar a través del surco primitivo invaden el hipoblasto, y desplazan a las células. las células hipoblastas finalmente se reemplazan completamente por una nueva capa de células proximales, que se conoce como el endodermo definitivo. Para el día 16, la mayoría de los hipoblastos han sido reemplazados. Las células restantes del epiblasto ahora se denominan ectodermo y forman la capa más externa y distal. algunas de las células epiblastas invaginadas permanecen en el espacio entre el ectodermo y el endodermo definitivo recién formado. estas células forman una capa germinal, conocida como el mesodermo. Una vez se formó el endodermo definitivo y el mesodermo. Una vez que se completa la formación del endodermo definitivo y el mesodermo, las células epiblastas ya no migran hacia la línea primitiva. A lo largo de la gastrulación, el ectodermo continúa formándose desde el cráneo hasta el extremo caudal del embrión, estableciendo tres capas germinales primarias distintas en todo el disco embrionario. El proceso de gastruación es finalmente completo.

[@atharvtupkar9]

Thank u so much ☺️

[@thefluffybunny5083]

Thanx alot

[@layanalnosani9577]

thank youuuuuuuuu soooooooooo much!

[@areebakhatri1488]

Primitive streak arrived at cranial end or caudal end?

[@ghadaalazab6240]

Thank you❤️🌸

[@dudacorrea3254]

Thank u!!!!

[@meriemkennaoui1049]

I REALLY found it so difficult to understand it especially this lesson in biology (Embryologie) so how can I understand it easily ...if someone knows please share with me the information

[@izzahnabilah4905]

amazing 10/10

[@rofidamohammad6989]

It helps me so much

[@mikeoxlong4944]

does the primitive streak form in the amniotic cavity? i'm confused

[@salsabilalbadan3]

Mike Oxlong i think yes it forms over the epibalst so in the amniotic cavity

[@aeonian_harshul]

No

[@DrAbhinavKumar]

It forms in a part of the surface lining the amniotic cavity (epiblast)

[@shabeena92]

At the end of the gastrulation germ layer formed is??

[@abukenzah]

better than my medical school lecture

[@estherywema6051]

I have a question. Since the primitive streak is formed at the dorsal side of the embryo, shouldn't left and right be switched?

[@Taylor-kj1mu]

Imagine a fully grown person lying on their back on a table. If you were standing at the foot of the table, looking up at their feet, their right side would be to your left and their left side would be to your right. This is convention used in the video, and it's pretty much the standard for cross sectional views in the horizontal plane.

[@estherywema6051]

I think you're wrong there. The blastocoel is indicates the ventral side of the embryo, and the person is thus lying on their ventral side. We're indeed standing at the foot of the table, and thus is the right side on your right and the left side on your left. Or am just mixing up everything? ;)

[@Taylor-kj1mu]

You know what? I think you're absolutely right. I hadn't considered the fact that the neural plate forms on the dorsal aspect. I apologize for leading you astray! I guess the video is incorrect as well?

[@emilienbindelle]

omg i was so confused for a while, i found so strange that they've mixed both

[@manikpanchal1903]

Thnx man

[@luvleywlle_]

Can i know, what kind of that gastrulation?

[@019anuragsonowal5]

TYSM

[@rmaguire08]

THE LEFT & RIGHT SIDES ARE LABELED WRONG!!! It really confused us in our embryology class. I didn't want everyone else confused too.

[@thecurledfreckle]

No they're correct, I think. It's based off the embryo's right and left, not the viewer's.

[@renuahuja8308]

Rebecca Nuñez Yeah you are right...even I was thinking the same way and was here to see if anyone had talked about it!

[@fathialouail7385]

@@renuahuja8308 they are correct if it's based off the embryo 's right and left and the caudal end ......wich you best luck.

[@minak8145]

Oh, Thanks Rebecca🙏🏼 I thought so, but I never looked at the comments. And I was really confused.

[@rajeevreddy3315]

Sir What about Involution, Ingression Delamination and Epiboly

[@ikechinwandu6692]

This is beautiful. My story looks like Anshika's

[@claudettepena4983]

te amo gracias

[@nazleenabdi2807]

Tnx sir

[@user-pu6gx1cr9i]

Thank god

[@dragonshinerthewyvern1597]

Does anyone else notice the buzzing sound in the background? It's bugging me.

[@alexisla4368]

10/10

[@rupanjanmanna7600]

Which germ layer forms first and which one is the last to form out of the three?

[@rajeevreddy3315]

Endoderm

[@averagejoe8854]

My test is tomorrow so probably won't get a response in time but, don't the cells move by ingression, not invagination?

[@primalpictures-anatomyTV]

Thank you for reaching out. Our anatomy team has looked into this issue. The epiblast cells migrate inwards and detach from epiblast, then slip beneath into the interior embryo to form the definitive endoderm, hence the process should be referred as ingression rather than invagination indeed. We hope this answers your question and thank you for spotting the error. Our team is currently working to resolve it, and we will provide a link to an updated movie as soon as possible.

[@kristiangrell9139]

at the beginning you talk about primitive streak forming in caudal end and then you talk about this end as a cranial part of a body... why?

[@primalpictures-anatomyTV]

Thanks for reaching out, Kristian. In the video we’ve said that the primitive streak forms at the caudal end of the embryonic disc. Then the cranial end of the primitive streak expands to form the primitive node. The head of the embryo will form at the extremity of the embryonic disk near the primitive pit, which is surrounded by the primitive node. We hope this answers your question. If you'd like to learn more, please email us at [e-mail].

[@nawabalisolangi7414]

Good yr

[@ollieanabella264]

is there still an archenteron for this organism?

[@primalpictures-anatomyTV]

Thank you for your query. The archenteron is a cavity surrounded by the endoderm, which later becomes the cavity of the digestive tract. As this video explains the gastrulation process of a human embryo, the archenteron would be present. Hope this answers your question.

[@fluffyclouden]

Where is Hensen's node

[@muhju9610]

Easy to understand as drinking water

[@studyworld7795]

it it gastrulation in birds?????

[@-homechord-2908]

shit, i get it now. tysm!!!

[@studyworld7795]

plzzzz tell anyone

[@alimohammadhosein3856]

🙏🙏🙏🙏

[@azankhichi2046]

A word by word copy and full animation copy of gastrulation video by embryology channel

[@valterabinass7902]

It is incase of human

[@roeetencer4881]

i think left and right are wrong at min 1:05

[@primalpictures-anatomyTV]

Hi there, thanks for watching and your comment! Our anatomy team is aware of the left and right labelling issue at 1:06 - the labels should indeed be the other way around. Thank you to anyone who provided feedback on this error. Our team is currently working to resolve it, and we will provide a link to an updated movie as soon as possible.

[@sudamwagh9430]

🍎🍎🍎

[@hania9432]

thank you so much for such a helpful video !!!!!!

[@manaliwaghmare65]

Thank you so much