substantia gelatinosa


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Related to substantia gelatinosa: Nucleus proprius

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 ?
These receptors are located throughout the CNS as well as in the substantia gelatinosa of spinal cord and play an important role in central pain processing and in neural plasticity in the spinal cord.
Clonidine acts on the postsynaptic alpha 2 receptors (Stimulation) in substantia gelatinosa present in dorsal horn of the spinal cord.
Epidural local anaesthetics and opioid when used in combination, they provide analgesia acting at two distinct sites--LA at nerve axons and opioid at the p receptor at substantia gelatinosa of spinal cord.
Its analgesic effect following intrathecal administration is mediated spinally through activation of post synaptic alpha 2 receptors in substantia gelatinosa of spinal cord and it works by blocking the conduction of C and A delta fibres, increase potassium conductance in isolated neurons in vitro and intensifies conduction block of local anaesthetics.
It also activates the descending inhibitory pathways (Medellospinal pathways) and there by decreases the release of nociceptive substances from substantia gelatinosa.
The injection of opioid into the epidural space provides analgesia by acting on receptors in lamina II, IV and V of substantia gelatinosa.

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