Medulla spinalis - Substantia grisea

Rexed lamina

The Rexed laminae comprise a system of ten layers of grey matter (I-X), identified in the early 1950s by Bror Burke Rexed to label portions of the spinal cord. ¹²

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

1. ^ Rexed B (1952). "The cytoarchitectonic organization of the spinal cord in the cat.". J Comp Neurol 96 (3): 414–95. doi:10.1002/cne.900960303. PMID 14946260. 
2. ^ Rexed B (1954). "A cytoarchitectonic atlas of the spinal cord in the cat.". J Comp Neurol 100 (2): 297–379. doi:10.1002/cne.901000205. PMID 13163236. 

External links

• Overview at University of the West Indies
• Overview at University of Medicine and Dentistry of New Jersey

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