Ectoderm, Endoderm, & Mesoderm

[@DirtyMedicine]

This video is all about remembering a few sentances to help you get the derivatives correct. Remember that the mnemonics out there in other reviews are not at all related to the individual structures (Crest, Tube, Surface, etc.) so it's pretty challenging to learn these associations unless you use more purposeful mnemonics. To summarize what you should remember: "you CLEAN the surface with SOAP" "a Tube of NEASPOREN" "SPAMS MOTEL with Crest toothpaste" "CLEAR TV with Malcolm in the Middle on it"

[@ricardoa.pascual9793]

@Mirette Atnas Hi, you're right! Both follicular cells and C cells (parafollicular) are derived from endoderm (branchial Pouches). FA'2019 has it written on p.322, p.599, and p. 607. The problem is that this is a relatively RECENT discovery. If you look up most of the current literature it will (incorrectly) say that it is neural crest.

[@AvijeetGhosh611]

@DirtyUSMLE please upload a video for pharyngeal pouches

[@raymondbascal3703]

For anyone studying this last minute, something that helps me is just memorizing overarching ideas that can get me points. It's not all encompassing, but could be helpful! Surface ectoderm - Things that are more on the surface Neural tube - Anything CNS related Neural crest - Anything PNS related or act like neural cells outside of the CNS. Mesoderm and Endoderm are basically presented similarly in the video already :) Good luck! And thanks again, Dirty!

[@AlanaOkun]

thank you!!!

[@kinlam1476]

High yield mesoderm: SPLEEN

[@Lechu1982]

UW loves spleen :D

[@tanweerb1800]

lmao this exact question made me search for embryonic mnemonic xD

[@CJ-SA]

@@tanweerb1800 Literally why I'm here now too

[@IBRAHIMMOHAMED-ek6ew]

😂😂 it's look spleen bring all here

[@JasonVaysberg]

Yes, this one comes up again and again and again.

[@HiketoHeal]

Good to know the odd ball too. Spleen is from mesoderm even tho it's with the GI/viscera.

[@otto9875]

Anterior Pituitary (AP at end of soAP) = Surface ectoderm. “And then the other one, is the other one” -goljan. Posterior pituitary = Neural tube. High yield.

[@javiboscaino]

10/10 high yield bro. It'd be awesome if you could do one about cranial nerves and their pathways! Great work, and I look forward to your next vid :)

[@techfit6827]

parafolicullar cell is a former neural crest but is part of endoderm now

[@davidlam6702]

fourth pharyngeal pouch

[@davidlam6702]

@@AI_medicine_future wasup where you been

[@davidlam6702]

@@AI_medicine_future yes i am on telegram. I just got application confirmation

[@AI_medicine_future]

@@davidlam6702 congrats , Im waiting for it too,im going for jan, telegram id ?

[@Skepticalstudent45]

No the rest of the thyroid is endoderm (1st and 2nd pharyngeal pouches) bc it starts in the oropharynx and descends in the thyroglossal duct… the parafollicular cells ARE NEURAL CREST (4th pouch)

[@temams8817]

UPDATE: Thyroid C cells are now considered an Endoderm derivative (according to UW)

[@lcasey-bb8vz]

Hey! Thanks so much for all your work and videos. Has helped me a lot get a base knowledge before I dive into the weeds. Just wanted to give you a heads up.. UWorld has an update that Parafollicular C cells are now classified as Endoderm!

[@smit5934]

1 high yield exception to this is that SPLEEN is an mesodermal derivative and not endodermal[whereas all the other abdominal organs are endodermal derivatives ]

[@hafsatitan4667]

For neural crest, a better mnemonic is MASS PASTE (hotels/motels keep alot of free toothpaste so mass paste) M- melanocytes, myenteric plexus A- adrenal medulla S- Schwann cells S- skull bones P- pia and arachnoid matter, PNS AS- aorticopulmonary septum T- thyroid c cells E- endocardial cushions

[@Hannah-ll9kw]

Thank you for this

[@jimmyknopfler90]

Mesodermal abnormalities already have a name, VACTERL/VACTREL Syndrome. Just saying. Great videos, by the way. Your channel is my go-to for anything I find too difficult to understand or memorize. Keep up the excellent work!

[@AznCoolDragon]

Wow, absolutely wow. You sir, are a genius!

[@m.talhademirel3513]

CLEAN SOAP is a lifesaver great video!

[@pioneermedicgroupa]

Thyroid C cells arise from endoderm not Neural crest cells. But you are life saver already thank you for existing

[@rahmakamil1993]

Thank you so much 👍😊 I love your mnemonics a lot and hope to see a video about pharyngeal arches and pouches

[@allsportfreak23]

What happened to your pharyngeal arch video? That thing was gold. Would like to send it to some year 1's now.

[@AP-xe2yt]

I cant find it either. but i wrote the poem in FA when i first saw it if you want it

[@aseela2283]

@@AP-xe2yt I want 🌚

[@kalengekalebwe2571]

@A P kindly send it

[@ifechioflight8790]

@@AP-xe2yt please can you please send it?

[@dons731]

Intelligence and class showed by the host... thankyou very much

[@alexlo-xq4wu]

You're a freaking lifesaver dude

[@patriciadupont7332]

This video is super helpful, I struggled with this in embryology, and trying to really get the hang of this for neuro. you have given me hope. Thank you

[@hashimpannu1444]

My guy, says Crest tooth paste and then puts an image of Colgate. Legend!

[@hashimpannu1444]

Also, after seeing that mnemonic. A suggestion I have is you could possibly add "after eating a MOTEL'S SPAM, you need to brush with 'Crest' toothpaste."

[@Skepticalstudent45]

The rest of the thyroid is endoderm (1st and 2nd pharyngeal pouches) bc it starts in the oropharynx and descends in the thyroglossal duct.

[@nunchukgrl2]

Abnormality in mesoderm formation - > VACTERL

[@DJudoka]

Another idea maybe for people who are not familiar with Neasporen (NASPOREN) you can also reorganize it into the word Persona which might be more familiar, and so the mnemonic I came up with is "There is a childish PERSONA in the TUBE" thinking about a kid in a water slide, hope that helps

[@prospertsebam]

This is helpful. Thank you.

[@Brickswol]

This is a bit beyond the scope of the MCAT (what I'm studying for right now), but I'm sure I'll be back.

[@baiqmariaulfa6139]

This is good very help me for study

[@merym4117]

THAK YOU SOOOOOO MUCH

[@afsanaansarishaik6637]

Lil correction parafollicular c cells is of EN DODERMAL origin

[@Crappybara.-.]

You are awesome.thankyou

[@mirandakhaidem7781]

Very helpful thanks a lot

[@alpao74]

How about bones and connective tissue? Don't they come from the mesoderm too?

[@drimranulhoda4173]

Simply Awesome Sir

[@usmleislife3396]

Can u make video on hypothesis error confidence interval p value... it will really help

[@Pxrdunk]

Usmle Goal pleaseeee

[@MaverickAlenMaranan]

this one applies with the frog right?

[@happyperson4001]

Thank you so much ! this video really helped me :)

[@mikeyzfabulous2306]

osmosis has a funny visual mnemonic for the derivates

[@DoctorLomeli]

amazing video man!

[@myprettygirl91]

great video! spleen is mesoderm!

[@ibtehajtariq4549]

Mnemonic for neural tube derivates: CNS of New PERSON Helped me to remember.

[@ramkrishna_nagar]

100 /10 bro..

[@anotherdoseyt]

Doesn't the heart and circulatory system also come from the mesoderm?

[@suomynonaanonymous]

THANKS!

[@mobenkane2075]

I would prefer VACTERL association mnemonic instead of CLEAR TV , excellent lectures

[@clay4037]

crest toothpaste but you put a picture of colgate toothpaste, great video though

[@DirtyMedicine]

LOL you're right, wow the power of brand recognition

[@oliviamay7958]

I came here to say this hahahaha

[@tylerklee2755]

Super helpful

[@shhhh_itsjustus]

Hey! I am studying hair you should have went into the ectoderm more. Great video though

[@JasonVaysberg]

I feel like I have to relearn these every 2 weeks.

[@windsor-sp2wp]

another mnemonic:- CLEAN Surface MESS C: cornea L: lens E: ear A: ant. pit (rathke pouch) n: nose Surface Ectoderm M: Mammary E: Episdermis S: salivary S: sweat

[@arjungadhiya714]

this slaps.

[@DirtyMedicine]

is that a good thing?

[@luckyhour3858]

Hard

[@bobjones1950]

My anatomy textbook states that the bones of the viscerocranium develop from ectoderm,is it true? I thought the skeletal system was mesodermal in origin.Sorry if it's a stupid question,I'm just a beginner

[@DirtyMedicine]

there are going to be exceptions to each of these. i highly doubt that particular one will come up, but you never know.

[@ADollaNaDream]

I love you.

[@ghassanauf8103]

wasting time

[@parighazavy9719]

I am irani i dont understand speak english please translate to persian