Nucleus proprius of spinal cord

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Nucleus proprius of spinal cord
Medulla spinalis - Substantia grisea - English.svg
Medulla spinalis - Substantia grisea
Latin nucleus proprius medullae spinalis; laminae spinales III et IV
TA A14.1.02.121
FMA 73906
Anatomical terminology

The Nucleus proprius is a layer of the spinal cord adjacent to the substantia gelatinosa. Nucleus proprius can be found in the gray matter in all levels of the spinal cord. It constitutes the first synapse of the spinothalamic tract carrying pain and temperature 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, IV, and V make up the nucleus proprius.[1] Nucleus proprius (NP), along with the substantia gelatinosa of Rolando are involved in sensing pain and temperature.

See also[edit]


External links[edit]

  • Diagram at
  • Sławomirski J, Głuszak J (1986). "Structure and topography of the nucleus proprius cornus dorsalis of the spinal cord of horses". Pol Arch Weter. 25 (4): 131–6. PMID 3620378.