| Front | Sympathetic trunk and chain ganglia |
|---|---|
| Back | Sympathetic trunks extend from base of skull to tip of coccyx on each side of the vertebral column. Regions: 1. Cervical (3 ganglia for 8 spinal nerves) 2. Thoracic (12 ganglia) 3. Lumbar (5) 4. Sacral (5) Functions: 1. Ganglia are site where pre- and post-ganglionic sympathetic neurons synapse. 2. Conduits to distribute post-ganglionic sympathetics to spinal nerves. 3. Give rise to splanchnic nerves that distribute sympathetics to internal organs (viscera). |
Tags: ans
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