What are the Differences Between Sympathetic and Parasympathetic Preganglionic Neurons?
There are notable differences between sympathetic and parasympathetic preganglionic neurons. Sympathetic preganglionic neurons are relatively short and synapse in ganglia close to the spinal cord, such as the sympathetic chain ganglia or prevertebral ganglia. In contrast, parasympathetic preganglionic neurons are longer and synapse in ganglia located near or within the target organs, such as the ciliary ganglion or the terminal ganglia.
