Introduction to Embryology - Fertilisation to Gastrulation (Easy to Understand)

If you find embryology difficult to understand, then this should be the first video you watch. This video covers the basic concepts from ovulation to the formation of the trilaminar germ disc (which will turn into YOU!).
Post any questions you have about the video below, I read all the comments:
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SUMMARY OF VIDEO:
First week of development: Ovulation to Implantation
1. After ovulation the oocyte is transported through the uterine tube.
2. Fertilisation (fusion of a sperm with the oocyte) occurs in the ampulla of the oviduct. For fertilisation to occur, both capacitation and acrosome reaction occur (not explained in video but important to know).
3. Cleavage and blastocyst formation occur.
4. Implantation into the uterine wall.
Second week of development: Bilaminar Germ Disc
1. Trophoblast differentiates into the cytotrophoblast and the syncytiotrophoblast.
2. Epiblast and hypoblast layers develop.
3. Small cavities form the amniotic cavity and yolk sac.
4. Blastocyst completely embedded in the uterus, but it produces a slight protrusion into the lumen of the uterus.
5. Syncytiotrophoblast penetrates deeper and erode the endothelial lining of the maternal capillaries. These capillaries are congested and dilated (sinusoids).
6. Uteroplacental circulation is established.
Third week of development: Trilaminar Germ Disc
1. Gastrulation occurs, beginning with the appearance of the primitive streak.
2. Epiblast cells move inward (invaginate) to form new cell layers, the endoderm and the mesoderm.
3. Cells that do not migrate through the streak but remain in the epiblast form ectoderm.
Note: the epiblast gives rise to all three germ layers, and these layers form all of the tissues and organs.
MORE EMBRYOLOGY:
Embryology of the Heart:
• Embryology of the Hear...
Embryology of the CNS:
• Embryology of the CNS ...
Embryology of the Kidney:
• Embryology of the Kidn...

[@minass]

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[@sanaalvi3]

that made my concept clear in just 18 mins. thank you so much sir. the effort you put into your drawing and the colors and explanation...stupendous. thank you again.

[@sami4144]

HY R u pakistani?

[@minass]

Thanks for watching! Keep in touch for the next video coming soon :D

[@hellohelloitsmehi]

Literally the cutest lecturer "this will become you" / "this will become this" (points to self) thanks for the amazing video! It was very easy to understand with the great explanations and drawings!

[@minass]

😅

[@andranikvasilyan9819]

@@minass can you do a video on - The development of the vascular system please :)

[@asserm.8047]

this is amazing. i dont understand why this series/your channel didn't blow up more

[@sarahwithanh4108]

Another very thankful college student.
That video made everything so much clearer!

[@aylawithers1008]

Thank you so much! I have a developmental biology exam tomorrow and you explain it so much better than anyone else!

[@syedtousif6702]

Salaams doc, it’s the most amazing lecture on embryology I have ever heard.
Love you for the sake of Allah.

[@xCrazedHearts]

this was literally the easiest video to understand on embryology! thank you so much

[@minass]

Thanks for watching!

[@aliakberrajani3425]

In gastrulation, all three germ layers are produced from the epiblast. The cells of the epiblast burrow in to form the endo and mesoderms. The epiblast becomes the ectoderm. The hypoblast is displaced and continues to be part of the yolk sac - It does NOT contribute to the endoderm.
Just commenting here to save this point, and to mark the video. Ty Dr Minass.

[@eliftas7854]

That was just awesome! Thanks a lot. Please keep doing videos like that cause I really need them. Thanks again

[@sarahtorres8640]

very thankful medical student!! thank you!!

[@nicolesinou632]

Amazing explanations that clarified so many questions I had. Very thankful med student here. Love your enthusiasm!

[@s..u9048]

Please keep making embryo videos! You’re like the only one that I have found that teaches it well and has good illustrations. Maybe Liver, external genitalia, and stomach for the next few videos?

[@khawattiepersaud8787]

so true

[@beegumhashimuddin4187]

Big thing simplified into little small things easily understandable in very little time, but a huge relief to people like me. I very much appreciate the great effort you put into doing this short yet important video. Hats off to you sir.

[@minass]

Thank you!

[@devinricks5705]

Your videos are amazing. Thank you so much keeping it simple. Everything makes sense to me now. I cant wait to show my classmates your channel. You did great going slow and clear so I dont get bogged down with the info. Really nice

[@minass]

Wow thanks for this comment. Its my pleasure to present this content for you guys, I hope you get a lot out of it. What do you study?

[@devinricks5705]

I'm in medical school. After seeing this material, all the tiny detail from my class lecture became clear. It is great to get information from another source, such as your channel, to clarify the items that the professors skip over quickly.

[@MrAlldevices]

Thank you so much doctor, you're a true hero!

[@Nem4891]

Your detailed diagrams and lecture really helped me. I was always scared of development biology but after listening this lecture m nw curious . Thanks a lot sir keep making such videos about embryology.

[@lucianoval903]

Very helpfull. Thank you for taking the time to make this lecturer.

[@minass]

My pleasure Luciano. Thanks for watching :)

[@anna.banana]

You are definitely created to be a teacher. 👑

[@eintroll8792]

Just Wow. Literally just wow. Thank you so much!!!! Greetings from Iran

[@vickamonvoisin4035]

Thank you. It was so easy to understand

[@stevenc4596]

Thank you from an OMS-1 in Florida!!

[@UAE8643]

I liked your way of teaching, great!

[@iamasimbinzahid]

Love you for this bro. Very helpful. Stay blessed ❤️.

[@valcheung5747]

Thank you, Dr. Minass.

[@minass]

Most welcome!

[@mahmadchorahi]

Very good way of teaching

[@mhoss9]

You are so passionate in explaining this. It really shines through. Need to learn this for dental hygiene and therapy and this video helped me so much without confusing me. Thanks you

[@minass]

Masoum Hosseini you’re welcome! 🙂

[@dennisnixon6799]

Thank you so much Minass!!!!

[@xhuljanoshehu4399]

Please keep making Videos! Well done!

[@doctorposting]

pleaseeee do the continuation of this!

[@vanesyayulianti4530]

Really helpful and easy to understand thank u

[@ashokkumarjaiswal6562]

So much physical efforts to teach someone whom you haven't even seen...God bless u

[@minass]

Its no problem at all to spread knowledge and help people. Thanks!

[@ravirathavi6962]

That's make very easy to remember and also clear my concepts.

[@shaziafarooq4157]

Sir your lecture is really very awsome
May God Bless you.......

[@alimiri4949]

Thank you so much bro.You are amazing.
Now my stress about embryology exam subsides because I found a perfect teacher here!!

[@brookebaker628]

Ali Miri you studying microbiology in university or what? I’m thinking about going into embryology but what and where’s the jobs in that field?

[@Shaktyy]

You know what? seriously you explained it more clear and simple! awesome explanation! now i have a clear view about this topic! very helpful! thanks alot!

[@minass]

Thanks for watching Shakti :D

[@medicalstudy2856]

very helpful video, Thank you very much..

[@Sersupremo961]

Thank I love your classes!!!!

[@minass]

You're so welcome!

[@theresetownsend5961]

This helped so much, thank you!!!!

[@minass]

Thanks Therese!

[@janagiramanmadhuraj4740]

Man in just 18 mins!! Made the tough topic easy

[@minass]

JANAGIRAMAN M MADHURAJ 🙂

[@hassinayazid99]

so helpful. thank you Dr!

[@minass]

Glad it was helpful!

[@shreyachhabra3676]

You're just amazing sir... 🙌❤ THANK YOU SOOOO MUCH FOR MAKING US UNDERSTAND EVERYTHING IN SUCH A SIMPLE MANNER..♥♥
loved the moment when you said, "THIS IS YOU!" 😂🙌🔥

[@ellendawson2000]

This made varsity embryology so much easier to understand! Would definitely recommend!!

[@minass]

Thanks Ellen

[@thatoramothwala240]

Thank you very much,you're the best💞💥you really made things easy

[@Urosurgeons]

Great teaching !! Laughed when you said 'not to scale' Keep it up !!!

[@minass]

Haha :D

[@emeraldtrustwords2036]

Wow, this is brilliant 😮❤🔥🔥🔥

[@kheltaramaarye9725]

this is the right platform to start embryology and understand in easy way 👍

[@minass]

Thanks

[@ashishpatro3404]

I salute you sir!!!! This lecture was amazing 👌... Thanks 😊 sir..

[@ilianaradeva6551]

Thank you so much for that, it was extremely helpful!

[@minass]

My pleasure

[@ellarafati6236]

another wonderful explanation thank you so much!

[@minass]

Ella Rafati another wonderful person watching my video and commenting. Thank you!!!

[@mujeebabbasi5983]

You are a very great teacher.

[@minass]

Thank you! 😃

[@Fr3doskin]

This really explained the 2 hour lecture I didn't understand in class, thank you very much for this video, sir.

[@minass]

This is exactly why I did it! Thanks for watching, best of luck to you on your exams!!

[@saniha337]

👍 appreciate ur quick response

[@patriciaotieno4769]

wow just wow. great content😇

[@charithasreeraj2803]

Ur just amazing!!!! Made it so simple...👐

[@minass]

Thank you so much. You are the amazing one for watching

[@hanikhodadadi5689]

Thank you Dr
first is firs : you are perfect
Please keep on ...

[@salmaal_nowr4844]

Great !!! Keep going 😃😃😃

[@daniadelvi9260]

Thank you so much for the video sir
It was extremely helpful 😀😀😀

[@okaileyokantey5730]

Hi Minass! Love your videos. Was wondering if you had videos and notes on formation of the placenta and liquor amnii. Doing my rotation in Obstetrics and Gynaecology and I’m really struggling to understand. Thank you

[@rahulupadhyay3352]

amazing explanation ...loved it ..

[@minass]

Glad you enjoyed it Rahul!

[@emereenmunyai3569]

I told myself i would find you after my varsity showed us this lecture video and i did!!😅 you are Literally the best lecture.

[@theBenson5]

SO HELPFUL!!! Thank you! More embryology videos please!!!!! :)

[@minass]

Sure will Kimberly. Follow on Facebook and insta to see everything I upload including printable pictures for your notes 😀

[@iris2771]

I’m very appreciated about your tutorial video , thanks !

[@minass]

Thanks for watching!

[@iris2771]

I hope that I could clearly explain it like you, Mr.Minass : )

[@ckc1206]

You deserve more views!! Great job!!

[@minass]

Kuang Chung Chen thanks Kuang 🙂

[@haripriyagajjala5363]

Thank you very much sir💯

[@nadarycko826]

thankyou so much

[@minass]

You're welcome

[@drarumugamannamalai7539]

excellent sir

[@priscaorji3185]

What you said about the days being different based on different textbooks is literally all I needed to know😭😭❤. I've been going crazy with the numbers and trying to link em up but it's not been adding up❤❤

[@vangdavid2]

Thank you very much! I'm starting my second year of Naturopathic Medical school in Illinois. It's extremely intense and fast paced. This was a very easy simple understandable way to explain this process. I especially like how you started from the beginning - (sperm & egg). It's easier to follow when you know where everything is coming from (the whole process), rather than bullet points of the stages. You do a great job explaining the whole process in a simple way. Thanks!

[@hannahmak7072]

Fantastic video, thank you so much!

[@minass]

Cheers Hannah!

[@angelayang5183]

Thank you the explanation is very clear and cute!!

[@minass]

When I planned this video I made sure that I tried to make it as clear and cute as possible. Glad it turned out well 😂👌🏼

[@xc6105]

Thanks for such nice introduction. Helped me a lot.

[@minass]

You're very welcome

[@sulaimanaljabari]

Thank you so much better than a 50 minute lecture

[@minass]

Sulaiman Aljabari my thoughts too 😆

[@SciencebyJuhi]

Thank you so much you makes my concept clear thanks once again

[@minass]

Glad to hear that!

[@flyhigh9434]

Thank you so much Dr. It is really hopeful. God bless you Dr.

[@minass]

Always welcome

[@karolyn9447]

Thank you so much!! You are making this so much easier to understand!!

[@minass]

Thanks for watching Karolyn - comments like this make me want to make more videos 😊

[@karolyn9447]

PBL Heaven pleaseee do more, my professor is obsessed with Frogs and genes and her teaching is a tad bit everywhere!! Make more videos you are saving my life!!

[@minass]

Will do. What are you studying?

[@karolyn9447]

Neurobiology and a slight intro to Internal Medicine. If you can, could you possibly do other organisms such as the Drosophila, C.elegans and Chickens. I am having difficulty trying to compare and cross reference each system per organism.

[@edvaldoleme2598]

Great teacher!

[@minass]

Thanks Edvaldo

[@geniuspeng]

Thank you for your breakdown. It was super useful to have everything on a single summary board. 👏👏😃

[@minass]

Glad it helped!

[@sara-gy2ic]

Effort made for the diagram...is awesome...
Nicely done

[@minass]

saraswathi selvam thanks Saraswathi 🙂. Follow on Instagram and Facebook for more embryology content!

[@fhb1997]

BEST TEACHER EVER THANK YOU THANK YOU THANK YOU THANK YOU

[@minass]

YOU ARE EXTREMELY WELCOME!

[@JingyiJingleBells]

So beautiful to understand how we become ourselves. I teach functional anatomy as part of a movement exercise system where we embody our anatomy. Really appreciate your work. This brings lots of inspiration to my own teaching.

[@minass]

Wonderful!

[@jeremiahbaker6396]

thank you so much sir

[@pavitransankar7095]

very clear

[@N21345]

Thank you so much!

[@noname9ify]

Thank you so much for this! It’s amazing and really easy to understand, and your drawings are really good.

[@minass]

Anca Taslâca cheers Anca. Follow me on Facebook and Instagram for extra material 🙂

[@hashinihansika3626]

OMG THANK YOU SO MUCH!!!!! I FINALLY UNDERSTOOD🙌

[@minass]

You're so welcome

[@drsubiaa5377]

Thank you very much Ian so grateful

[@minass]

Its my pleasure

[@raufkhaan4866]

Thank You Sir ❤️✌🏻🙌🏻

[@sajaali1111]

Amazing!! thank you

[@minass]

Thank you too!

[@beyza2049]

Thank you perfect 👌

[@sycamore0765]

Indeed, there are really good professors that will make you easily understand the topic😊 Thank you Sir. God bless. Hoping to see a lot of educational vids here

[@minass]

Thanks Krystle. You sure will see a lot more videos coming soon 😊

[@sycamore0765]

@@minass yay thanks. This really helped me a lot. In my General Zoology class.

[@faizajavaid4420]

this was extremely helpful!!!! do you have a video on the development of the respiratory tract, lungs and bronchi, as well?

[@minass]

Yep its on my channel now

[@sanatmishra93]

@@minass I'm pretty sure the guy has passed his class by now lol

[@jacobbryan4875]

@@sanatmishra93 or myb he failed like i will

[@essienabas2285]

​@@jacobbryan4875 did you end up failing?

[@osaidayyadi8091]

Great video

[@hebafathy2743]

Very good thank u

[@Grace-ec5hb]

thank you so much!!!

[@lamatunnoorkhan9539]

Hi! I had a question. Earlier you said that above the endoderm we had the amnionic cavity, but in the little quick review thingie after the development of the three germ layers, you drew the amnionic cavity above the ectoderm. Also, when you're showing the neural fold formation, you say it's developed from the ectoderm, right? Sooo, is this ectoderm closer to the yolk sac/ endometrial lining, or is it the layer deeper into the uterine wall as compared to the endoderm? I'd appreciate if you could answer!

[@bereketaklilu8020]

Thank you

[@asmitrimal3412]

thanks very much Sir.

[@minass]

Most welcome

[@abnormal4]

I wish you were my teacher! Thanks so much!

[@minass]

Well you can ask me any medical questions you want and I will be your teacher -> @m1.nass

[@foreveryoung782]

Masya Allah. Really helpful. May Allah grant you health and hidayah to upload more embryology videos. This channel is one of the most understandable embryology channel i've ever seen.

[@minass]

Rahmatsyah Siregar thank you. I surely will be healthy enough to keep uploading as many as you guys want. What do you want to see next?

[@foreveryoung782]

@@minass Maybe out of embryology. Honestly, neuroanatomical pathway is one of my favourite, but still confuse in it and i still consider it really complex. I'm really glad if U make such a simple way of remembering neuroanatomical pathway. But if u still have many things to do, it's okay.
Thank you