Sympathetic Nervous System

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.

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Tree Number(s): A08.800.050.800

MeSH Unique ID: D013564

Entry Terms:

• Nervous Systems, Sympathetic
• Nervous System, Sympathetic
• Sympathetic Nervous Systems
• Systems, Sympathetic Nervous
• System, Sympathetic Nervous

See Also:

• Chromaffin System
• Sympathectomy
• Sympatholytics
• Sympathomimetics

All MeSH Categories
Anatomy Category
Nervous System
Peripheral Nervous System
Autonomic Nervous System
Sympathetic Nervous System
Ganglia, Sympathetic
Stellate Ganglion
Superior Cervical Ganglion
Splanchnic Nerves
Sympathoadrenal System
Vasomotor System
Pressoreceptors