Posterior grey column
This article needs additional citations for verification. (September 2015) |
Posterior grey column (posterior horn of spinal cord) | |
---|---|
Details | |
Identifiers | |
Latin | cornu posterius medullae spinalis |
MeSH | D066148 |
TA98 | A14.1.02.115 A14.1.02.023 A14.1.02.114 |
TA2 | 6064 |
FMA | 256530 |
Anatomical terminology |
The posterior grey column (posterior cornu, dorsal horn, spinal dorsal horn, posterior horn, sensory horn
The posterior column contains the cell bodies of
Anatomy
The posterior horn extends to the surface of the spinal cord.[3]
Structure
The posterior grey column is subdivided into six layers termed Rexed laminae I-VI
- Marginal nucleus of spinal cord (lamina I)
- Substantia gelatinosa of Rolando (lamina II)
- Nucleus proprius(laminae III, IV)
- Spinal lamina V, the neck of the posterior horn[4]
- Spinal lamina VI, the base of the posterior horn.
The other four Rexed laminae are located in the other two grey columns in the spinal cord.
Additional images
-
Section of thedecussation of the pyramids
Function
Posterior horn of spinal cord involves in sensory processing.
The function of the spinal dorsal horn is to process and integrate sensory information from the peripheral nervous system. It receives inputs from primary afferent fibers and modulatory systems, and it projects to higher brain centers and motor neurons. The dorsal horn circuitry is involved in various aspects of sensory processing, including discrimination, integration, and modulation of nociceptive and non-nociceptive signals. Dysfunction of the dorsal horn circuitry has been implicated in chronic pain conditions and other neurological disorders.[5]
See also
- Posterior column-medial lemniscus pathway
- Posterior horn of lateral ventricles
- Anterior grey column
References
- ^ "Dorsal horn | anatomy". Encyclopedia Britannica. Retrieved 2021-05-04.
- ^ "columna posterior". TheFreeDictionary.com. Retrieved 2023-06-13.
- ISBN 978-0-7295-3752-0.
- ISBN 1-888799-61-7.
- PMID 32595458.