| SPN | Sympathetic preganglionic neuron |
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| SCG | superior cervical sympathetic ganglia |
| SCG | superior cervical sympathetic ganglion |
| SG | sympathetic ganglia |
| sympathetic i. |
vagotonia.
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| sympathetic n. |
1. truncus sympathicus. 2. one of the nerves of the sympathetic nervous system (see under system).
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| sympathetic nervous s. |
1. the portion of the autonomic nervous system that receives its fibers of connection with the central nervous system through the thoracolumbar outflow of visceral efferent fibers. These fibers (preganglionic) arise from cells in the thoracic and upper lumbar levels of the spinal cord, leave by way of ventral roots, and, by way of rami communicantes, enter sympathetic trunks, where some synapse with ganglion cells. The fibers (postganglionic) of these ganglion cells return to spinal nerves by way of rami communicantes to supply the blood vessels, smooth muscle, and glands of the trunk and limbs, or go as visceral branches to the blood vessels, smooth muscles, and glands of the head and neck, and the viscera of the thorax, abdomen, and pelvis. Some preganglionic fibers pass through the sympathetic trunks and synapse in the prevertebral ganglia; postganglionic fibers from those ganglia supply adjacent viscera. In TA terminology, called pars sympathica divisionis autonomici systematis nervosi. Called also thoracolumbar division and thoracolumbar part of autonomic nervous system. See Plate 48. 2. former name for the autonomic nervous system.
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| sympathetic ganglion |
One of the ganglia of the thoracolumbar (sympathetic) division of the autonomic nervous system. It includes vertebral or lateral ganglia (those forming the sympathetic trunk) and prevertebral or collateral ganglia, more peri
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| sympathetic o. |
granulomatous inflammation of the uveal tract of the uninjured eye (the sympathizing eye) following some weeks after a wound involving the uveal tract of the other eye (the exciting eye). The end result is bilateral granulomatous inflammation of the entire uveal tract. Called also sympathetic uveitis.
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