ganglion

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Related to Sympathetic ganglion: parasympathetic ganglion, dorsal root ganglion

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 ?
The protective mechanism of statins could be achieved through its influence on sympathetic ganglion neurons.
The most common treatments provided for CRPS include physical therapy, NSAIDs, antidepressant medications, calcitonin, anticonvulsant medications, corticosteroids, opiate medications, sympathetic ganglion blocks, bier block, and some rare modalities like manual lymph drainage and hyperbaric oxygen therapy (18, 22-24).
6-12) This is particularly so concerning invasive therapies such as sympathetic ganglion block, (13) sympathectomy, (12) and spinal cord stimulation (9-10) that introduce the possibility of adverse effects.
2) It is a well-circumscribed tumor with a fibrous capsule that arises from sympathetic ganglion cells along the paraspinal axis.
In conclusion the ganglioneuroma arises from sympathetic ganglion which is a very rare disease and affects children more often than adults.
To model ISGL in humans, one should apply irradiation near the cervical sympathetic ganglion in the rat.