Preganglionic cell body in lateral horn of Preganglionic neuron gray matter Postganglionic neuron Preganglionic neuron to sympathetic chain ganglion Postganglionic neurons Preganglionic neuron to collateral ganglion 侧副神经节 L2 Postganglionic neurons 9●- Collateral Sympathetic ganglia Division Sympathetic chain ganglia e Preganglionic cell bodies in lateral horns of spinal cord T1-L2⚫ Preganglionic cell bodies in lateral horns of spinal cord T1-L2 Sympathetic Division 侧副神经节