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  #1  
Old 01-06-2011
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Zygote Embryo Cross Section Question!

NBME QUESTION FORM 1:

Which labeled structure contain muscle precursor cell derived from somite

Embryo Cross Section Question!-embryo.jpg
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  #2  
Old 01-06-2011
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I hate embryology
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  #3  
Old 01-06-2011
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"H" i think
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  #4  
Old 01-06-2011
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Quote:
Originally Posted by JJtheMD View Post
"H" i think
Reason behind your choice!
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Old 01-06-2011
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well, i chose "H" because of the order of skin to bone... So i assumed that "I" is probably ectoderm or simple connective tissue, couldn't really tell... I thought "G" was bone... While "H" was the muscle that usually surrounds bone typically in the limbs... I do admit that if it really is connective tissue, muscle, bone.. they all have a mesodermal origin.. but i defintelly know it cant be anything in the middle.

It looks more like an out branching of a forming limb or anything really. Its a tough question.. im not even sure if im right or not, but thats how i came 2 an answer
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Old 01-06-2011
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Looks Like H..... i can see the body cavity forming and the neural tube.., so the flaps at the side look like limb buds.. and well if the central axis is the bone.. the muscles are beside..
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Old 01-06-2011
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I will go with H) somatic mesoderm
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  #8  
Old 01-06-2011
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Hey guys this is NBME QUESTION FORM 1

I AM CONFUSED BETWEEN G AND H


MANY OF MY FRIENDS TOLD ME MOST PROBABLY H I DONT KNOW WHY

SO IF SOMONE HAVE A GOOD EXPLANATION
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Old 01-06-2011
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Look at the diagram of B. at 22 days

Embryo Cross Section Question!-embryocross.png
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  #10  
Old 01-06-2011
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Finally I got to label all of them from these books. Figure 8.1 in High Yield Embryology. Figure 9.4 B in Langman's Medical Embryology (very good book, just look illustration, you even doesn't need to read).

Embryo Cross Section Question!-embryo-cross.jpg
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A axial mesoderm, from which vertebrae will develop
B neural tube
C notochord
D aorta
E mesentery
F gut tube
G limb bones
H limb extensor muscles
I fascia (subcutaneous fat)
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Old 05-11-2011
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Quote:
Originally Posted by aktorque View Post
Finally I got to label all of them from these books. Figure 8.1 in High Yield Embryology. Figure 9.4 B in Langman's Medical Embryology (very good book, just look illustration, you even doesn't need to read).

Attachment 1027
click image to enlarge

A axial mesoderm, from which vertebrae will develop
B neural tube
C notochord
D aorta
E mesentery
F gut tube
G limb bones
H limb extensor muscles
I fascia (subcutaneous fat)
Hi Dear, i didn't find this pic in HY 4th ed. and i dont have langman.
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Old 05-11-2011
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Vikas, just search for embryo pics on google images. Or try downloading Langman or get it from a library. It really is a good book. I have used it for my undergrad studies. But I'm not so sure about it for preparing for step 1.
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Old 05-11-2011
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Quote:
Originally Posted by eesfee View Post
Vikas, just search for embryo pics on google images. Or try downloading Langman or get it from a library. It really is a good book. I have used it for my undergrad studies. But I'm not so sure about it for preparing for step 1.
thanks dear eesfee, i used that book while in school, thanks for suggestion.
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