Substantia gelatinosa of Rolando
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"Substantia gelatinosa" redirects here. For the substantia gelatinosa centralis, see Central gelatinous substance of spinal cord.
The apex of the posterior grey column, one of the three grey columns of the spinal cord, is capped by a V-shaped or crescentic mass of translucent, gelatinous neuroglia, termed the substantia gelatinosa of Rolando (or SGR) (or gelatinous substance of posterior horn of spinal cord), which contains both neuroglia cells, and small nerve cells. The gelatinous appearance is due to a very low concentration of myelinated fibers. It extends the entire length of the spinal cord and into the medulla oblongata where it becomes the spinal nucleus of the trigeminal nerve.
Quick Facts Details, Identifiers ...
Substantia gelatinosa of Rolando (SGR) | |
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Details | |
Identifiers | |
Latin | substantia gelatinosa cornu posterioris medullae spinalis |
MeSH | D013376 |
TA98 | A14.1.02.119 |
TA2 | 6067 |
FMA | 74019 |
Anatomical terminology |
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It is named after Luigi Rolando.
It corresponds to Rexed lamina II.[1][2]