Overview of Sympathetic Pathways. Preganglionic axons of the sympathetic division extend from the T1-L2 regions of the spinal cord. Ganglionic axons are located in the sympathetic trunk and prevertebral ganglia, and extend to the target organs. (Left) The outflow of preganglionic axons and the distribution of postganglionic axons innervating the skin. (Right) Sympathetic postganglionic axon pathways through the gray rami, spinal nerves, and splanchnic nerves.
