sub·stan·ti·a ge·lat·i·no·sa  (səb-stān'shē-ə jə-lāt'n-ō'sə)  n. A narrow, dense, vertical band of gelatinous gray matter forming the dorsal part of the posterior column of the spinal cord and serving to integrate the sensory stimuli that give rise to the sensations of heat and pain. [New Latin substantia gelatinōsa : Latin substantia, substance + New Latin gelatinōsus, gelatinous.] |
substantia gelatinosa substantia ge·lat·i·no·sa (jə-lāt'n-ō'sə, jěl'ə-tn-ō'sə)
n.
The apical part of the posterior horn of the gray matter of the spinal cord, composed largely of very small nerve cells and whose gelatinous appearance is due to its very low content of myelinated nerve fibers. It functions in the integration of sensory stimuli that give rise to the sensations of heat and pain. Also called Rolando's gelatinous substance.