Look up Rexed lamina in Wiktionary, the free dictionary.
The Rexed laminae (singular: Rexed lamina) comprise a system of ten layers of
grey matter (I–X), identified in the early 1950s by
Bror Rexed to label portions of the
grey columns 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.[citation needed]
Lamina V: Neck of the dorsal horn. Neurons within lamina V are mainly involved in processing sensory afferent stimuli from cutaneous, muscle and joint mechanical nociceptors as well as visceral nociceptors. This layer is home to wide dynamic range tract neurons, interneurons and propriospinal neurons. Viscerosomatic pain signal convergence often occurs in this lamina due to the presence of wide dynamic range tract neurons resulting in pain referral.[4]
Lamina VI: Base of the dorsal horn. No nociceptive input occurs here, instead this lamina receives input from large-diameter fibres innervating muscles and joints and from muscle spindles which are sensitive to innocuous joint movement and muscle stretch to feed forward this information to the cerebellum where it can modulate muscle tone accordingly.[5]
Lamina IX: hypaxial (body wall muscles), lateral (in limb regions) and medial (back muscles)
motor neurons, also
phrenic and
spinal accessory nuclei at cervical levels, and
Onuf's nucleus in the sacral region
^Rexed B (June 1952). "The cytoarchitectonic organization of the spinal cord in the cat". The Journal of Comparative Neurology. 96 (3): 414–95.
doi:
10.1002/cne.900960303.
PMID14946260.
S2CID42584106.
Look up Rexed lamina in Wiktionary, the free dictionary.
The Rexed laminae (singular: Rexed lamina) comprise a system of ten layers of
grey matter (I–X), identified in the early 1950s by
Bror Rexed to label portions of the
grey columns 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.[citation needed]
Lamina V: Neck of the dorsal horn. Neurons within lamina V are mainly involved in processing sensory afferent stimuli from cutaneous, muscle and joint mechanical nociceptors as well as visceral nociceptors. This layer is home to wide dynamic range tract neurons, interneurons and propriospinal neurons. Viscerosomatic pain signal convergence often occurs in this lamina due to the presence of wide dynamic range tract neurons resulting in pain referral.[4]
Lamina VI: Base of the dorsal horn. No nociceptive input occurs here, instead this lamina receives input from large-diameter fibres innervating muscles and joints and from muscle spindles which are sensitive to innocuous joint movement and muscle stretch to feed forward this information to the cerebellum where it can modulate muscle tone accordingly.[5]
Lamina IX: hypaxial (body wall muscles), lateral (in limb regions) and medial (back muscles)
motor neurons, also
phrenic and
spinal accessory nuclei at cervical levels, and
Onuf's nucleus in the sacral region
^Rexed B (June 1952). "The cytoarchitectonic organization of the spinal cord in the cat". The Journal of Comparative Neurology. 96 (3): 414–95.
doi:
10.1002/cne.900960303.
PMID14946260.
S2CID42584106.