Autonomic Nervous System

As the vessels mentioned are related to the upper limb, the associated sympathetics arise from preganglionic lateral horn cells at the T1-6(7) spinal levels.  Postganglionic cells are located in the stellate (cervic-thoracic) and T2 ganglia.

There are no parasympathetic axons in the limbs.

Answer provided by:

Dr Mark H. Hankin
Professor & Director, Anatomy Donation Program
University of Toledo
Neuroscience
3000 Arlington Ave
Mail Stop #1007
Toledo, OH 43614-5804

For your information there is a wonderful review article that I call your attention to on this topic (Elenkov IJ, Wilder RL, Chrousos GP, Vizi ES The sympathetic nerve--an integrative interface between two supersystems: the brain and the immune system. Pharmacol Rev. 2000 Dec;52(4):595-638. Please consult that paper for additional details and many helpful references.

My response to your question is primarily derived from this excellent paper.