Implantation | Behavior | MCAT | Khan Academy

Created by Jeff Otjen.
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[@munyajay03]

Your introduction 😂 "been a week since you've been fertilized" 😂😂 great sense of humour. I enjoyed the informative video. Great stuff, keep it up!!

[@purplehaze5152]

The way he keeps saying "you" makes it so personal😶😶😶

[@windywendi]

It is personal. Every one of us have literally been through this.

[@blueblood-_-]

I hate that

[@windywendi]

What are blood vessels? "Collections of blood that's slowly moving around." Brilliant.

[@shanageetha7508]

wow!! the stuffs that had been taught in lectures for two weeks !!! this videos made me understand the whole process in few minutes !! thank you so much!!

[@yeseniaiglesias3493]

Absolutely LOVE the way you teach!! IThese Khan Academy videos really help me... but this professor is one of my favorites! I love the way you teach! I was so overwhelmed by this topic and all the terms! You really made it stick!!! Thank YOUUUU!

[@chethiyaabeysinghe4410]

This helped me a lot . I tried studying it bt it was so hard bt now it is easy. Pls make more videos

[@monaipsm]

Your visualization of stages really helps! Thank you so much

[@nikkisheds]

The best video I have ever seen regarding pregnancy. You’re amazing thank you so much. I needed an answer of understanding when they say “implantation” and questioned “yeah but what does the blastocyst do once it’s embedded into my uterine wall. Now I have a clear understanding. Cheers

[@BeautifullyCreatedByYAH]

I like your explanation of it all...thanks!

[@debbyg2899]

This is very interesting. Something we should all learn in school, but sadly don’t. It would be helpful to also know the timing of all these processes in terms of days in a woman’s cycle.

[@khadijaalkiyumi8122]

omg.....please make more videos, i was trying to study this for around two weeks, but could never really the the picture of it! truly its not as detailed as what im studding, but you need to get the basis in order to understand the details. Thanks, and please continue making videos.

[@Arda-Personal]

this

[@brunocarter2531]

you prolly dont care at all but does anyone know a tool to log back into an Instagram account? I somehow forgot my login password. I would appreciate any assistance you can give me

[@armandocassius829]

@Bruno Carter instablaster :)

[@brunocarter2531]

@Armando Cassius I really appreciate your reply. I found the site through google and Im in the hacking process now. Takes quite some time so I will get back to you later with my results.

[@brunocarter2531]

@Armando Cassius it did the trick and I finally got access to my account again. I'm so happy! Thanks so much, you saved my account :D

[@petesfairy86]

amazing !!

[@meloneesky]

Thank you so much for the explanation, it is so detailed and thorough. One question though, how long does the whole process take in general? Thanks a lot!

[@juliaketelhut7816]

Thank you!

[@westdelooz2611]

well done!

[@maya6215]

Great video so much better than reading text or looking at illustrations

[@abdou1178]

thank you thank you thank youuuuu

[@lucianlupas9850]

Great video !

[@giorgosgranitsiotis]

Thank you

[@alessiamartina]

thank you!!!!!!!

[@thomastittus8140]

Tysm sir

[@user-is4hx3ch5n]

good presentation informative and clear

[@koval.doctor]

great great great! But the only thing, what i would like to improve...When I do the print screen and print it, the black color of the backcloth is not printer cartridge friendly))

[@gloriamogoru8977]

Have an exam in few hours thankz a lot

[@chocolatelover4481]

That's so interesting! I'm happy I chose medicine.

[@mohamedamin8019]

are u fucking serious that is the most complicated shit i have ever read

[@vishalriar]

@@mohamedamin8019 this alone won't do, you have to read your books too😂

[@gaurishukla2393]

Really u r happy....woh ho

[@tragisscott]

that is.. pretty crazy

[@MegaLukecage]

you realy explained the placenta well. thanks!!! - via YtPak(.com)

[@JesseStevenPollom]

When because was the newest, not if when besides the trophoblast

[@savitasinha6673]

Excellent

[@jamesfilosa6277]

+savita sinha - Eggcellent. Standing ovumation!

[@beautifulcoils6233]

need some advice.... I had light spotting on cycle day 20&22 then red bleeding Wednesday to today. sometimes it leak out like water sometimes I only see it when I wipe also sometimes its gone then come back again

[@alexkkallweit3202]

I never wanted to start the "process of implantation" as you say

[@biologywalah-surenderlegha7734]

Nicely explained #surenderlegha

[@phayvouronyenwe5174]

Please I have a question. What is resting on the endometrium lining that forms a crypt

[@flevislegend]

What software is this??? Help

[@rifanbudi34]

Human creation in Quran وَلَقَدۡ خَلَقۡنَا ٱلۡإِنسَٰنَ مِن سُلَٰلَةٖ مِّن طِينٖ We have created man from an extract of clay. (Surah Al-Mu'minun, verse 12) ثُمَّ جَعَلۡنَٰهُ نُطۡفَةٗ فِي قَرَارٖ مَّكِينٖ Then We made him a sperm-drop in a firm resting place. (Surah Al-Mu'minun, verse 13) ثُمَّ خَلَقۡنَا ٱلنُّطۡفَةَ عَلَقَةٗ فَخَلَقۡنَا ٱلۡعَلَقَةَ مُضۡغَةٗ فَخَلَقۡنَا ٱلۡمُضۡغَةَ عِظَٰمٗا فَكَسَوۡنَا ٱلۡعِظَٰمَ لَحۡمٗا ثُمَّ أَنشَأۡنَٰهُ خَلۡقًا ءَاخَرَۚ فَتَبَارَكَ ٱللَّهُ أَحۡسَنُ ٱلۡخَٰلِقِينَ Then We turned the sperm-drop into a clot, then We turned the clot into a fetus-lump, then We turned the fetus-lump into bones, then We clothed the bones with flesh; thereafter We developed it into another creature. So, glorious is Allah, the Best of the creators. (Surah Al-Mu'minun, verse 14)

[@renaif1482]

احبك

[@lilshawtywright]

How long does this process take?

[@Dayzephrin]

Wow nice, just one thing - where does blastulation tie in with this? Does blastulation and gastrulation and neurolation all occur prior to implantation or is there some overlaps?

[@JoshMcKenna]

+EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE 1) Fertilization 2) Blastulation 3) Implantation 4) Gastrulation 5) Neurulation & Organogenesis

[@Dayzephrin]

thanks!

[@merdzky098]

When the embryo is in the blastocyst stage, that usually marks the end of blastulation. The moment the blastocyst is implanted and burrows itself in the maternal endometrium, gastrulation is initiated, forming the three germ layers which will then differentiate into the different organs of an organism.

[@alexpaul1251]

EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE blastulation. then gastrulation n in the end neuralation

[@komancikartal]

Ur nickname makes me laugh like crazy LOL

[@rohanroy6629]

Man this is f making sense😮

[@khadijahussein8462]

😍😍

[@turtlewearsahat]

Very good - but I thought that it was the proliferating cytotrophoblasts which actually invaded (becoming the extravillous trophoblast)as opposed to the syncytiotrophoblasts. Anyone know for sure?

[@kamelijahorvatovic3546]

The syncitiotrophoblast is the outer layer of trophoblast and it is the one degrading the endometrium.

[@tooncallens319]

Turtle is right, the villi are formed from the cytotrophoblast that invades into the syncytiotrophoblast. But a lot of steps are not in this video, primary villi form on day 13 = almost very end of implantaion. By then, the amnion, chorion,... Are already formed.

[@keshavashiva1345]

Any pain at that time

[@Dixel56]

zona pellucida sounds like Lollapaloza. It's a great festival!

[@rubiyamdr8045]

Dixel 😂

[@66hgt17]

Isn’t it spelled syncytiotrophoblast.

[@valeskaschacht5018]

Fucking awesome! Thx

[@yanar6261]

TTTTrying tо Cоncеive?Discovеr thе #1 Mistаke CooооuplesМаkе When Trуing tо Cоncеivеtwitter.com/0b95104f6e261e609/status/783200219605245952 Impрpplantation Bеhaviоr МCАT KККhаn Accсаdеmу

[@thekharataykid]

is this fro medical students? why does it say mcat then?

[@kamelijahorvatovic3546]

You did a great job but it's not totally correct, you kind of put the wrong picture to some things. There was nothing about the formation of lacunae in syncitiotrophoblast, the actual primary vili are formed far after the uterine blood start flowing through lacunae and the uterine vessels don't actually grow or move like that, the syncitiotrophoblast is growing and producing proteolitic enzimes which degrade the vessel walls so the blood starts pouring into the lacunae. I know it is hard to draw it like that and everything and you did a really good job on everything else.

[@tooncallens319]

Actually, studies have shown that there is not a real circulation of maternal blood until third month of pregnancy. The lancunae are not filled with blood so early in pregnancy.

[@RealityLabsX]

@@tooncallens319 Then how does the fetus get's its nutrients

[@najibahtahir9245]

@@RealityLabsX sertoli cells

[@ExploreCHINA616]

So a foetus is basically a parasite?

[@lamppis4359]

You're a parasite :D

[@JoshMcKenna]

+Linges Hels Interestingly, most of my professors and colleagues jokingly refer to developing embryos and fetuses as parasites. There are many types of implantation and placentation; humans develop hemochorial placentas, meaning the embryo completely destroys the maternal spiral arteries in order to form large blood pools (called lacunae) in which the fetal chorionic villi (leeching fingers of trophoblast tissue) float to obtain nutrients and oxygen from maternal blood. Various other species have less invasive placentation patterns such as syndesmochorial placentation, in which this kind of blood vessel destruction only occurs at some spots along the placenta rather than the entire fetal-maternal interface.

[@shieh.4743]

Linges Hels Yes. It is.

[@remesahnoor8359]

Parasitic relation is only between two different species . Like a hook worm is a parasite for humans . But a fetus is not a parasite.

[@SassyxChick]

Yes a beautiful parasite lmao

[@renzokhov9465]

is the morula and blastocyst have the same size ?

[@zahraa-ls8ny]

NO ,the morula smaller than blastocyst because the differant in the days in the same a week the morula formed in 3rd day while the blastocyst formed in 4th day

[@dimpeace5503]

ur very fast

[@lakhdeepsingh9132]

REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

[@MohamedAhmed-el7td]

سيئ جدا

[@KillerTacos54]

Thank you!