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Old 04-15-2013
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Zygote Spina Bifida Opening!

In different types of spina bifida, where is the opening of the unclosed posterior neuropore... Failure of closure of posterior pore gives spina bifida so in spina bifida occulta, meningocele n meningomyelocele where is the central canal opening to outside.???? I mean it should communicate to outside if the pore is open ..? So where is that opening..?

Pleaseeeeeee somebody explain


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Last edited by MEDICINE DOC; 04-15-2013 at 10:19 PM. Reason: Spelling mistake
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Old 04-15-2013
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Lol..of course the opening to outside is the skin at the back of body at level of defect.
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Old 04-15-2013
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lol..i know it must be simple, but somehow i am not getting it ...

so that means, failure of closure of posterior neuropore will just expose the spinal cord to exterior.?
i was thinking the spinal cord is open and the central canal is communicating to outside , so i was confused with these pics showing intact central canal..

please reply on this..
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Spina Bifida Opening!-slide0084_image085.jpg  
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Old 04-16-2013
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Quote:
Originally Posted by MEDICINE DOC View Post
lol..i know it must be simple, but somehow i am not getting it ...

so that means, failure of closure of posterior neuropore will just expose the spinal cord to exterior.?
i was thinking the spinal cord is open and the central canal is communicating to outside , so i was confused with these pics showing intact central canal..

please reply on this..
Thank you
In this picture:
A is "spina bifida occulta" - spinal canal bony part (vertebral bone) is not fused properly
B - "meningocele" bony part is more widely opened, so that meninges ( dura, pia arachnoid) protrudes outward but spinal cord is intact
C - "meningomyelocele" its more wide opening and allows spinal cord also to come out
All this types ( A, B and C ) are covered with skin from outside but on
D - even the skin is not fused and spinal cord is opened totally
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