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lesser petrosal nerve

   Also found in: Wikipedia 0.03 sec.
lesser petrosal nerve
n.
The parasympathetic root of the otic ganglion, derived from the tympanic plexus.

lesser petrosal nerve,
a small nerve originating in the tympanic plexus that carries preganglionic parasympathetic fibers to the otic ganglion.


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This subgroup also included intratympanic, attic, and hypotympanic meningiomas and those of the geniculate ganglion, the sulci of the greater and lesser petrosal nerves, the jugular foramen, the internal acoustic meatus, the mastoid process, and the petrous bone.
The innervation of the parotid involves the preganglionic parasympathetic portion of the gland, beginning in the inferior salivatory nucleus and passing via the glossopharyngeal nerve, the tympanic plexus, and the lesser petrosal nerve to the oticganglion.
 
 
 
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