Rolando's gelatinous substance -->
gelatinous substance
medical dictionary

The apical part of the posterior horn (dorsal horn; posterior gray column) of the spinal cord's gray matter, composed largely of very small nerve cells; its gelatinous appearance is due to its very low content of myelinated nerve fibres.

Synonyms: substantia gelatinosa, Rolando's gelatinous substance, Rolando's substance.

(05 Mar 2000)