Rexed laminae

Rexed laminae

The Rexed laminae comprise a system of ten layers of grey matter (I-X), identified in the early 1950s by Bror Rexed to label portions of the spinal cord. [cite journal | author=Rexed B | title=The cytoarchitectonic organization of the spinal cord in the cat. | journal=J Comp Neurol | volume=96 | issue=3 | pages=414–95 | year=1952 |pmid=14946260 | doi=10.1002/cne.900960303] [cite journal | author=Rexed B | title=A cytoarchitectonic atlas of the spinal cord in the cat. | journal=J Comp Neurol | volume=100 | issue=2 | pages=297–379 | year=1954 |pmid=13163236 | doi=10.1002/cne.901000205]

Similar to Brodmann areas, they are defined by their cellular structure rather than by their location, but the location still remains reasonably consistent.

Laminae

* I-VI: Posterior/dorsal horn
** Lamina I: posteromarginal nucleus
** Laminae II/III: substantia gelatinosa
** Laminae III/IV/V: nucleus proprius
** Lamina VI: nucleus dorsalis
* VII-IX: Anterior/ventral horn
** Lamina VII: intermediolateral nucleus
** Lamina VIII: motor interneurons
** Lamina IX: motor neurons which also contain the nucleus of onuf in the sacral region
* Lamina X: neurons bordering Central canal

References

External links

* [http://www.mona.uwi.edu/fpas/courses/physiology/neurophysiology/RexedLaminae.htm Overview] at University of the West Indies
* [http://www2.umdnj.edu/~paneuweb/spincrd.htm Overview] at University of Medicine and Dentistry of New Jersey


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