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|General visceral efferent fibers|
|Scheme showing structure of a typical spinal nerve.|
1. Somatic efferent.
2. Somatic afferent.
3,4,5. Sympathetic efferent.
6,7. Sympathetic afferent.
|Gray's||subject #190 849|
The general visceral efferent fibers (GVE or sympathetic efferent fibers), probably arise from cells in the lateral column or the base of the anterior column and emerge through the anterior roots and white rami communicantes.
These are preganglionic fibers which end in various sympathetic ganglia from which postganglionic fibers conduct the motor impulses to the smooth muscles of the viscera and vessels and secretory impulses to the glands.
The cell bodies of GVE fibers are present from the first thoracic to the second lumbar spinal levels (ie, T1-L2).
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