Cervical Sympathetic System

Preganglionic sympathetic fibers

 * Originate from the intermediolateral nucleus of the spinal cord (level of T1- T3)


 * Pass to ventral root of spinal cord


 * Then proceed to white ramus communicantes


 * Ascend to cervical chain and synapse either to superior, middle or inferior cercal SYM ganglia


 * Majority of the synapse in the superior sympathetic ganglion