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Parasympathetic innervation to the salivary glands is carried via cranial nerves. The parotid gland receives its parasympathetic input from the glossopharyngeal nerve (CN IX) via the otic ganglion, [14] while the submandibular and sublingual glands receive their parasympathetic input from the facial nerve (CN VII) via the submandibular ganglion ...
The glossopharyngeal nerve has parasympathetic fibers that innervate the parotid salivary gland. The preganglionic fibers depart CN IX as the tympanic nerve and continue to the middle ear where they make up a tympanic plexus on the cochlear promontory of the mesotympanum.
These paired ganglia supply all parasympathetic innervation to the head and neck. ciliary ganglion (sphincter pupillae, ciliary muscle) pterygopalatine ganglion (lacrimal gland, glands of nasal cavity) submandibular ganglion (submandibular and sublingual glands) otic ganglion (parotid gland)
Preganglionic parasympathetic fibers for the parotid gland arise in the brainstem in the inferior salivatory nucleus, and leave the brain in the glossopharyngeal nerve (CN IX), then pass in the tympanic nerve to the tympanic plexus, then from the tympanic plexus in the lesser petrosal nerve to the otic ganglion where they synapse.
It is the general visceral efferent (GVE) component of the glossopharyngeal nerve supplying the parasympathetic input to the parotid gland for salivation. It lies immediately caudal to the superior salivatory nucleus and just above the upper end of the dorsal nucleus of the vagus nerve in the medulla.
Parasympathetic component of the glossopharyngeal nerve that innervates the ipsilateral parotid gland. Origin and central course The preganglionic nerve fibers originate in the inferior salivatory nucleus of the rostral medulla and travel anteriorly and laterally to exit the brainstem between the medullary olive and the inferior cerebellar ...
The lesser petrosal nerve (also known as the small superficial petrosal nerve) is the general visceral efferent (GVE) nerve conveying pre-ganglionic parasympathetic secretomotor fibers for the parotid gland from the tympanic plexus to the otic ganglion (where they synapse). It passes out of the tympanic cavity through the petrous part of the ...
Frey's syndrome is caused by re-routing of parasympathetic and sympathetic fibres of the auriculotemporal nerve (V3) within the otic ganglion. It is a complication of surgery involving the parotid gland whereby injury to these branches, which innervate the parotid gland and sweat glands of the face respectively, form abnormal connections.