The path from the spinal cord to the sympathetic ganglion is called the preganglionic (also called the neuron from which this path begins), and the path from the ganglion to the working organ is called postganglionic. Part of the peripheral or postganglionic neurons does not lie in the ganglia of the sympathetic trunks, but in the autonomic nerve plexuses located near the internal organs (for example, the solar plexus). The bodies of postganglionic neurons are located in the nodes of the nerve plexuses, which lie near or inside the organs they innervate. Postganglionic parasympathetic fibers are sent to the eye muscles, lacrimal and salivary glands, muscles and glands of the digestive tract, to the trachea, larynx, lungs, heart, genitourinary organs.
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