amitdoc2b
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can someone tell me what's being pointed to in this photo, and explain the answer to me? its a tough one!! i attached the question and pic below.. thanks..
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neuro.JPG (45 KB, 179 downloads)
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| study_ing
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it is a coronal section of the brain.
its an area near the ventricle so i simply guessed e as the answer...will probably have to see a few coronal sections on google images to understand that
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| drbcshah
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D Hypothalamus is the Answer
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| plastic_girl
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The question also mentions "state of disinhibition" and we know that loss of neurons in basal ganglia or one of its components leads to a state of disinhibition, most commonly striatum, so I guess the answer is E. striatum, even if we cant make out the diagram.
I guess they do "give the answer in the stem of the question" , as Prof. Goljan mentions in his lectures!
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| aml
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E as close to the ventricle
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| study_ing
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guys, this seems more like an inkblot projection test!
now i can imagine the midbrain here...
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| study_ing
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with the red nucleus, substantia nigra ...the only confusion is the white circular stuff...what could be the basis pedunculi is covered by something else...maybe its a cblm or something...its a coronal section and i remember all sorts of stuff cud show up in the same slice..
lets see what i think abt this 10 minutes later hehe :P
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| study_ing
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http://www.umanitoba.ca/Medicine/Anatomy/neuro/gr...
hey got lucky on google!!
look at the other coronal sections too at this link
http://www.umanitoba.ca/Medicine/Anatomy/neuro/at......
and we may be able to crack this one down!!
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| Dr.Papez
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Well said Waq...Difficult to orient to this picture. My guess is...
Part of it is the axial section of midbrain- and the coronal section of the lateral ventricle and cortex-through medial temporal lobe-hippocampus is seen on either side (like a watermelon cut in to planes -see pic!!!! (Hope I am not imagining tooooo much)
Arrow points to subtantia nigra- the stain on the picture is probably staining myelin because all white matter tracts including those on crus cerebri looks dark- look at subcortical regions and callosum.
The answer is E
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Watermelon.jpg (3 KB, 19 downloads)
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| Dr.Papez
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This Q was discussed some time back... I just cut pasted...you can view this linked thread
http://www.prep4usmle.com/forum/comments.php?id=3...
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| Dr.Papez
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> 80% Loss of neurons in S.Nigra leads to disinhibition of striatum.
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| Dragonfly
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it is substantia nigra. E. eventhough as many of you mentioned, just with the word "Disinhibition" you could make the right choice.
for labes see here
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