Sunday, February 2, 2014

Thoracic sympathetic trunk

Thoracic sympathetic trunk


  • Branches of sympathetic trunk to thoracic plexuses
  • Greater splanchnic nerve  formed by preganglionic fibers from T5~T9 ganglia, and relay in celiac ganglion. 
  • Lesser splanchnic nerve  formed by preganglionic fibers from T10~T12 ganglia, and relay in aorticorenal ganglion. 
  • The postganglionic fibers supply the liver, spleen, kidney and alimentary tract as far as the left colic flexure. 


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