Canadian Medical Guide > Anatomy > Nervous System > Peripheral Nervous System > Autonomic Nervous System > Sympathetic Nervous System Terms and Definitions




Sympathetic Nervous System

Medical Definition: The thoracolumbar division of the autonomic nervous system. Sympathetic preganglionic fibers originate in neurons of the intermediolateral column of the spinal cord and project to the paravertebral and prevertebral ganglia, which in turn project to target organs. The sympathetic nervous system mediates the body's response to stressful situations, i.e., the fight or flight reactions. It often acts reciprocally to the parasympathetic system.
Guide Notes: /drug eff: consider also SYMPATHOLYTICS & SYMPATHOMIMETICS; /surg: probably SYMPATHECTOMY
Sympathetic Nervous System Categories.
Canadian Medical Guide Definition Vasomotor System - The neural systems which act on vascular smooth muscle to control blood vessel diameter. The major neural control is through the sympathetic nervous system.

Sympathetic Nervous System Medical Definitions and Terms

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