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substantia gelatinosa
sub·stan·ti·a ge·lat·i·no·sa S0852650 (səb-stăn′shē-ə jə-lăt′n-ō′sə)n. A narrow, dense, vertical band of gray matter forming the dorsal part of the posterior column of the spinal cord 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.
[New Latin substantia gelatinōsa : Latin substantia, substance + New Latin gelatinōsus, gelatinous.]substantia gelatinosa
substantia [sub-stan´she-ah] (L.) substance; used in anatomic nomenclature in naming various components of body tissues or structures.substantia al´ba white matter.substantia gelatino´sa the substance sheathing the posterior horn of the spinal cord and lining its central canal.substantia gri´sea gray matter.substantia ni´gra a dark layer of gray matter separating the tegmentum of the midbrain from the crus cerebri.ge·lat·i·nous sub·stance [TA] 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 fibers; spinal lamina II (of Rexed). Synonym(s): substantia gelatinosa [TA], lamina spinalis II ☆ , spinal lamina II ☆ , Rolando gelatinous substance, Rolando substancesubstantia gelatinosa (səb-stăn′shē-ə jə-lăt′n-ō′sə)n. A narrow, dense, vertical band of gray matter forming the dorsal part of the posterior column of the spinal cord 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. |