Central gelatinous substance of spinal cord

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Central gelatinous substance of spinal cord
Medulla spinalis - Substantia grisea - English.svg
Substantia gelatinosa centralis is Rexed lamina X, labeled at center.
Latin substantia gelatinosa centralis medullae spinalis
Gray's p.753
MeSH Substantia+Gelatinosa

Throughout the cervical and thoracic regions the central canal is situated in the anterior third of the medulla spinalis; in the lumbar enlargement it is near the middle, and in the conus medullaris it approaches the posterior surface. It is filled with cerebrospinal fluid, and lined by ciliated, columnar epithelium, outside of which is an encircling band of gelatinous substance, the substantia gelatinosa centralis (or central gelatinous substance of spinal cord). This gelatinous substance consists mainly of neuroglia, but contains a few nerve cells and fibers; it is traversed by processes from the deep ends of the columnar ciliated cells which line the central canal.

It should not be confused with the Substantia gelatinosa of Rolando, which is located more dorsally.

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This article incorporates text from a public domain edition of Gray's Anatomy.