Editing Autonomic nervous system (section)

===Parasympathetic division===
{{Main|Parasympathetic nervous system}}
The parasympathetic nervous system consists of cells with bodies in one of two locations: the [[brainstem]] (cranial nerves III, VII, IX, X) or the sacral spinal cord (S2, S3, S4). These are the preganglionic neurons, which synapse with postganglionic neurons in these locations:
* [[parasympathetic ganglia]] of the head: ciliary ([[cranial nerve III]]), geniculate (cranial nerve VII),
* pterygopalatine ([[cranial nerve VII]] and IX), and submandibular ([[cranial nerve VII]] and IX),
* ottic in inner ear space ([[cranial nerve IX]])
* tympanic nerve of VII with C9, C10, C5 (cranial nerves [[Cranial nerve VII|VII]], XI, X, V) in promontory plexus in middle ear space
* trigeminal ganglion specially sensory (only mastication motor) is common with other ones
* in or near the wall of an organ innervated by the vagus ([[cranial nerve X]]) or [[sacral nerves]] plexus (S2, S3, S4)
these ganglia provide the postganglionic neurons from which innervations of target organs follows. Examples are:
* the postganglionic parasympathetic splanchnic (visceral) nerves
* the [[vagus nerve]], which passes through the thorax and abdominal regions innervating, among other organs, the heart, lungs, liver and stomach