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{{this article is about|obex portion of the brain. For the communications protocol "OBEX" (Object Exchange), see [[OBEX]]}}
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The '''obex''' (from the [[Latin language|Latin]] for ''barrier'') is the point in the [[human brain]] at which the [[fourth ventricle]] narrows to become the [[central canal]] of the [[spinal cord]]. The obex occurs in the [[Anatomical terms of location|caudal]] [[medulla oblongata|medulla]].The decussating of sensory fibers happens at this point.
 
The '''obex''' (from the [[Latin language|Latin]] for ''barrier'') is the point in the [[human brain]] at which the [[fourth ventricle]] narrows to become the [[central canal]] of the [[spinal cord]]. The obex occurs in the [[Anatomical terms of location|caudal]] [[medulla oblongata|medulla]].The decussating of sensory fibers happens at this point.
   

Latest revision as of 07:15, March 29, 2007

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Brain: Obex
Hind-brain of a human embryo of three months—viewed from behind and partly from left side.
Rhomboid fossa.
Latin '
Gray's subject #187 797
Part of
Components
Artery
Vein
BrainInfo/UW hier-633
MeSH [1]

The obex (from the Latin for barrier) is the point in the human brain at which the fourth ventricle narrows to become the central canal of the spinal cord. The obex occurs in the caudal medulla.The decussating of sensory fibers happens at this point.


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