substantia gelatinosa

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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).

substantia 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.

substantia gelatinosa

substantia gelatinosa

laminae II and III of grey matter of spinal cord dorsal horn, where incoming first-order neurone C fibres (conveying pain stimuli from periphery) synapse with second-order neurones

substantia gelatinosa,

n See SG.

substantia

pl. substantiae [L.] substance.

substantia alba
the white matter of the spinal cord and the brain.
substantia compacta
compact bone.
substantia gelatinosa
the substance sheathing the posterior horn of the spinal cord and lining its central canal.
substantia grisea
the gray matter of the spinal cord and brain.
substantia grisea centralis
the central gray matter that surrounds the cerebral aqueduct.
substantia nigra
the layer of gray substance separating the tegmentum of the midbrain from the crus cerebri.
substantia propria corneae
layer of transparent lamellated fibrous connective tissue which constitutes the bulk of the cornea; composed of collagen fibers disposed in platelike formations, fibroblasts and ground substance with many nerve fibers but no blood vessels.
substantia propria choroid
loose connective tissue of the choroid.
References in periodicals archive ?
N-type calcium channels are located mainly in the dorsal horn cells of the spinal cord, predominantly on the superficial layers, in the area of substantia gelatinosa where pain fibers synapse, Dr.
There is delayed maturation of descending inhibitory pathways from supraspinal areas, delayed maturation of interneurons in the substantia gelatinosa, and a possible deficiency of inhibitory neurotransmitters.
The substantia gelatinosa of the dorsal horn of the spinal cord contains receptors which, when stimulated, inhibit the firing of nociceptive neurons stimulated by peripheral A[delta] and C fibers and also inhibit the release of the nociceptive neurotransmitter substance P (11).
The enkephalins are found mainly in those areas of the brain associated with pain control, including the periventricular area, the periaqueductal gray, the midline raphe nuclei, the substantia gelatinosa of the dorsal horns in the spinal cord, and the intralaminar nuclei of the thalamus.
The primary mechanism of action is through the blockade of N-methyl-D-aspartate receptors situated in the substantia gelatinosa of the spinal cord (29,30).
A aparencia gelatinosa da polpa, quando em estadio de maturacao, e atribuida a pectina e mucilagem, que sao os seus principais constituintes.