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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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the greater superficial petrosal nerve, which supplies taste fibers to the palatal mucosa, preganglionic parasympathetic axons to the pterygopalatine ganglion, and postganglionic axons to the lacrimal glands, nasal glands, and palatine mucosal glands; it also communicates with the lesser petrosal nerve (2)
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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