Nucleus proprius of spinal cord

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Nucleus proprius of spinal cord
Medulla spinalis - Substantia grisea - English.svg
Spinal cord - grey matter
Details
Identifiers
Latin nucleus proprius medullae spinalis; laminae spinales III et IV
NeuroNames 1633
TA98 A14.1.02.121
TA2 6068
FMA 73906
Anatomical terminology

The nucleus proprius of spinal cord is a layer of the spinal cord adjacent to the substantia gelatinosa. The nucleus proprius can be found in the gray matter in all levels of the spinal cord. It constitutes the first synapse of the posterior gray column carrying pain, temperature and crude touch sensations from peripheral nerves. Cells in this nucleus project to deeper laminae of the spinal cord, to the posterior column nuclei, and to other supraspinal relay centers including the midbrain, thalamus, and hypothalamus. Rexed laminae III and IV make up the nucleus proprius. [1]

The neurons of the substantia gelatinosa of Rolando (Rexed lamina II) are involved in sensing pain and temperature. [2]

References

  1. cancerweb.ncl.ac.uk
  2. Westlund, Karin N.; Willis, William D. (2015). "Pain System". The Rat Nervous System. pp. 703–731. doi:10.1016/B978-0-12-374245-2.00025-5. ISBN   9780123742452.