Rexed laminae

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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. ^[1][2]

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

[edit] 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

[edit] References

1. ↑ Rexed B (1952). The cytoarchitectonic organization of the spinal cord in the cat.. J Comp Neurol 96 (3): 414-95.
2. ↑ Rexed B (1954). A cytoarchitectonic atlas of the spinal cord in the cat.. J Comp Neurol 100 (2): 297-379.

[edit] External links

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

Spinal cord

epidural space, dura mater, subdural space, arachnoid mater, subarachnoid space, pia mater, denticulate ligaments, conus medullaris, cauda equina, filum terminale, cervical enlargement, lumbar enlargement, anterior median fissure, dorsal root, dorsal root ganglion, dorsal ramus, ventral root, ventral ramus, sympathetic trunk, gray ramus communicans, white ramus communicans grey matter: central canal, substantia gelatinosa of Rolando, reticular formation, substantia gelatinosa centralis, interneuron, anterior horn, lateral horn, posterior horn (column of Clarke, dorsal spinocerebellar tract) white matter: anterior funiculus: descending (anterior corticospinal tract, vestibulospinal fasciculus, tectospinal tract), ascending (anterior spinothalamic tract, anterior proper fasciculus) lateral funiculus: descending (lateral corticospinal tract, rubrospinal tract, olivospinal tract), ascending dorsal spinocerebellar tract, ventral spinocerebellar tract, spinothalamic tract, lateral spinothalamic tract, anterior spinothalamic tract, spinotectal tract, posterolateral tract, lateral proper fasciculus, medial longitudinal fasciculus posterior funiculus: fasciculus gracilis, fasciculus cuneatus, posterior proper fasciculus

This page uses content from the English-language version of Wikipedia. The original article was at Rexed laminae. The list of authors can be seen in the page history. As with Psychology Wiki, the text of Wikipedia is available under the GNU Free Documentation License.