Brittany was visibly upset that a class she needed to take was cancelled because of low enrollment. jim observed that her eyes were dilated. 1) trace the sympathetic pathway from the lateral gray horn of the spinal cord to the iris of her eye? 2) identify the spinal area cervical or thoracic that the preganglionic axon exit in the anterior (ventral) root? 3) name the sympathetic ganglia in which the preganglionic and postganglionic neuron synapse