dorsal root


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Related to dorsal root: ventral root

root

 [roōt]
1. the descending and subterranean part of a plant.
2. that portion of an organ, such as a tooth, hair, or nail, that is buried in the tissues, or by which it arises from another structure, or the part of a nerve that is adjacent to the center to which it is connected.
Tooth anomalies with variations in root form. From Darby and Walsh, 1994.
anterior root the anterior, or motor, division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the posterior root to form the nerve before it emerges from the intervertebral foramen; it conveys motor fibers to skeletal muscle and contains preganglionic autonomic fibers at the thoracolumbar and sacral levels. Called also ventral root.
dorsal root posterior root.
motor root anterior root.
nerve r's the series of paired bundles of nerve fibers which emerge at each side of the spinal cord, termed dorsal (or posterior) or ventral (or anterior) according to their position. There are 31 pairs (8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal), each corresponding dorsal and ventral root joining to form a spinal nerve. Certain cranial nerves, e.g., the trigeminal, also have nerve roots.
posterior root the posterior, or sensory, division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the anterior root to form the nerve before it emerges from the intervertebral foramen; each posterior root bears a spinal ganglion that conveys sensory fibers to the spinal cord. Called also dorsal root.
sensory root posterior root.
ventral root anterior root.

dorsal root

n.
Either of the two roots of a spinal nerve, consisting of sensory fibers and arising from the posterior section of the spinal cord.

dorsal root

 Posterior root, see there.

dor·sal root

(dōr'săl rūt)
The sensory root of a spinal nerve, having a dorsal root ganglion containing the nerve cell bodies of the fibers conveyed by the root in its distal end.

dorsal root

a nerve trunk containing only sensory axons, that enters the SPINAL CORD near the dorsal surface.
References in periodicals archive ?
The gross examination showed no changes in the architecture of sciatic nerve, dorsal root ganglion, cerebrum, cerebellum, and spinal cord.
Changes in sorbitol, myo-inositol and lipid inositol in dorsal root and sympathetic ganglia from streptozotoc-indiabetic rats.
Evaluation of cisplatin neurotoxicity in cultured rat dorsal root ganglia via cytosolic calcium accumulation.
Owyang, "Butyrate-induced colonic hypersensitivity is mediated by mitogenactivated protein kinase activation in rat dorsal root ganglia," Gut, vol.
Levine, "[[alpha].sub.2]-Adrenergic receptor subtypes in rat dorsal root and superior cervical ganglion neurons," Pain, vol.
Chapman, "Creating a strain relief loop during S1 transforaminal lead placement for dorsal root ganglion stimulation for foot pain: a technical note," Pain Practice, 2017.
Voets, "Systematic and quantitative mRNA expression analysis of TRP channel genes at the single trigeminal and dorsal root ganglion level in mouse," BMC Neuroscience, vol.
In normal conditions, painful stimuli evoke action potentials in dorsal root ganglion (DRG) neurons (C-fibers or A[delta] fibers).
These included spinal cord stimulation and dorsal root ganglion stimulation.
The patient was implanted with two Freedom 4A electrode arrays, each array containing four contacts, at the L2 dorsal root ganglion under fluoroscopic guidance.
The y isoform of PKC (PKCy) is not expressed in dorsal root ganglia [16]; therefore, activation of PKCy can only occur downstream of the sensory neuron, or in surrounding nonneuronal cells.