ganglion

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Related to ganglionic: ganglionic cyst, Ganglion cells

ganglion:

see nervous systemnervous system,
network of specialized tissue that controls actions and reactions of the body and its adjustment to the environment. Virtually all members of the animal kingdom have at least a rudimentary nervous system.
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Ganglion

 

an anatomically isolated cluster of nerve cells (neurons), nerve fibers, and tissues, found in many invertebrates, all vertebrates, and man. In vertebrates, ganglia are located along the nerve stems.

Intervertebral ganglia, ganglia near the vertebrae, prevertebral ganglia, and ganglia enclosed in the thickness of the walls of the internal organs are topographically distinguished from each other. The intervertebral ganglia and similar ganglia are made up of sensory pseudo-unipolar neurons. Other ganglia are part of the peripheral sector of the autonomous nervous system and are mainly clusters of effector multipolar autonomous neurons, including sensory and association neurons. The clusters of neurons in each ganglion are surrounded by a layer of satellite cells, outside of which there is a thin capsule of connective tissue. Between the groups of neurons there are thicker connective tissue layers forming the connective tissue base, or stroma, of the ganglion. On the outside the ganglion is covered by a fibrous capsule, from which blood vessels reach the ganglion by way of the connective tissue layers. The synapses (nerve fibers that form the end, or terminal, contacts) lead to the bodies and branches of the autonomic neurons. In invertebrates, the ganglia arecoordinating centers carrying out the functions of a central nervous system. By means of reciprocal connections the ganglia in invertebrates form a single system that corresponds in its arrangement to the overall structure of their bodies.

IU. I. DENISOV-NIKOL’SKII

ganglion

[′gaŋ·glē·ən]
(neuroscience)
A group of nerve cell bodies, usually located outside the brain and spinal cord.

ganglion

1. an encapsulated collection of nerve-cell bodies, usually located outside the brain and spinal cord
2. a cystic tumour on a tendon sheath or joint capsule
References in periodicals archive ?
Control group: Regular distribution of E-cadherin expression in the ganglionic layer, regular internal and external plexiform layers in cells in the inner and outer nuclear layers, E-cadherin immunohistochemical staining Bar 50 [micro]m.
If they have associated ICC abnormality, then the results of ganglionic group may be disturbed as well, but we are not sure about it because of lack of significant literature data.
Histologically, Hirschsprung disease is characterised by the absence of ganglionic cells in the myenteric and submucous plexuses and the presence of hypertrophied non-myelinated nerve trunks in the space normally occupied by the ganglionic cells.
After performing a tangential migration from the ganglionic eminences, GABAergic interneurons undergo a second radial migration process in order to reach their final position in the cerebral cortex.
Other neurodegenerative conditions causing true dementia include vascular dementia (VaD), Parkinson's disease (PD), Pick's disease (frontotemporal dementia, FTD), Huntington's disease (HD), progressive supranuclear palsy (PSP), cortical basal ganglionic degeneration, Creutzfeldt-Jakob disease (CJD), and dementia with Lewy bodies (DLB).
Chapters begin with anatomy and physiology, then address many aspects of Parkinson's disease, including genetics, environmental factors, pathology, imaging, dementia, psychiatric issues, nonmotor aspects, and therapy, and the management of multiple system atrophy, progressive supranuclear palsy, corticobasal ganglionic degeneration, frontotemporal dementia, Huntington's disease, dystonia, and other movement disorders like tremors, restless legs syndrome, and psychogenic movement disorders.
The striking feature of ganglionic cultures grown without mitotic or fibroblast inhibitors was the enormous outgrowth of non-neuronal structures that grew out from E9.
abbreviatus DB extends from the posterodorsal region of the cerebral ganglia to the dorsal limit of the pleural and parietal ganglia located in the subesophageal ganglionic complex, along the course of the cerebral pleural connectives.
Cerebellopontine angle (CPA) ganglionic hamartomas are rare.
Parkinson-plus diseases (eg, corticobasal ganglionic degeneration) do not respond to levodopa.
Neurons of this tract interact with ganglionic neurons, which re-enter the brain and terminate at the pineal gland and endocrine gland that produces melatonin.
In addition to his work on Benadryl, Rieveschl investigated antihistaminic agents, antimalarials, antithyroid agents, analgetics, ganglionic blocking agents, local anesthetics, sympatholytic agents, and synthetic tanning agents.