How to remember germ tissue layers?

[ej37]

I keep seeing germ tissue questions popping up on practice questions. I can't seem to keep straight what systems arise from what germ layers... how do you guys remember what comes from ectoderm, mesoderm, endoderm?

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[minhaj]

• Ectoderm ---> Integument (everything you can see), lens of the eye and nervous system;
• Endoderm---> lining of digestive and respiratory tracts, parts of liver, pancreas, thyroid and bladder;
• Mesoderm---> circulatory system, excretory system, muslces, connective tissue, organs.

Make a list a keep reviewing it.

 

[missbee]

This is definitely more broad and not 100%, but helped me out a lot in Vert Morph:

Ecto = outside, what you can see
Meso = middle layers
Endo = inner, the gut tube

 

[Bu2009]

I had this comparative anatomy book that has like the embryo development and like all the germ layers color coded... You might want to have something like that.. sometimes a picture is worth a thousands words and helps out recall a lot.

 

[justdoit31]

Ectoderm- just think Ecto for Exterior... skin and stuff

Mesoderm- in the middle- linings and really any place that something you inhale or swallow end up- GI tract, lungs, bladder etc.

Endoderm- all the other stuff in there- for histology class the big thing was connective tissues- remember bone is connective tissue too!

 

[futuredoctor10]

Ectoderm- "attract o derm" - what attracts a mate? Eye lens, the skin, exterior traits
Mesoderm- "muscle" - muscle, circulatory & urinary systems (heart/bladder are muscles)
Endoderm - "endernal organs" - including lining of internal organs/tracts, etc

Mnemonics Courtesy of Kaplan

 

[jdent]

bump!

 

[Adnama]

Well I have a great one but it is not appropriate for a public forum.

 

[AZFutureDoc]

Well I have a great one but it is not appropriate for a public forum.

Better than the 4 F's?

 

[futuredoctor10]

Well I have a great one but it is not appropriate for a public forum.

Please do share 🙂 If you don't want to post publicly, PM? 😉

 

[spyderracing32]

Well I have a great one but it is not appropriate for a public forum.

Post it, these are ALWAYS the best for memorization. I have a really bad one for the trig functions. Everyone did SOH CAH TOA, but my mind was way in the gutter in trig lol.

 

[futuredoctor10]

Yeah... also curious to know your version of SOH CAH TOA, spyderracing?

 

[Adamska]

Ectoderm- "attract o derm" - what attracts a mate? Eye lens, the skin, exterior traits

LULZ, this fails because it doesn't account for the nervous system.

 

[futuredoctor10]

LULZ, this fails because it doesn't account for the nervous system.

True, unless you think "Brains and smarts are attractive" and then it fits 😀

 

[Adamska]

attractive spinal cord is a strech...

 

[futuredoctor10]

Haha that's true. I know it doesn't work for everything 🙂

 

[JC2]

This is waht I'm using to remember, anyone wanna try and pick it apart? (not a mnemonic but it will reduce the amount of work you have to do)

ecto - 'ecto' means outside so anything on the outside, plus the central nervous system (brain + spinal cord)

meso - Musculoskeletal system (including the tissue that connects), vascular system (including teh heart and the spleen because that's all red blood cells 😛), urogenital system (so that would mean kidneys/bladder and the reproductive organs), notochord

endo - everything else


c'mon that's only four things to memorize for meso i'd asy that's pretty good

 

[Adamska]

Haha that's true. I know it doesn't work for everything 🙂

it's still good either way.