Otic ganglion

The otic ganglion (from Greek ganglion " ganglion ", " leg over ", us " ear", "ear node ") is a parasympathetic ganglion at the base of the skull at the mandibular nerve near the foramen ovale.

Para Sympathetic share

The otic ganglion receives its fibers from the parasympathetic part of the IX. Cranial nerves, the glossopharyngeal nerve, which originates from the inferior salivatory nucleus. This is a nerve tympanic from the middle ear, which there with sympathetic fibers from the superior cervical ganglion, the tympanic plexus ( tympanic plexus ) is formed. From the tympanic plexus lesser petrosal nerve pulls from the middle ear to the otic ganglion. The connection of the glossopharyngeal nerve to the otic ganglion is also called Jacobson's anastomosis.

After switching on the postganglionic neuron in the ganglion, the fibers pull the nerve auriculotemporal and use this, actually purely sensory nerve pathway as a way of parotid gland ( parotid gland ), which is innervated parasympathetic ( secretory ). A portion of the fibers paraysympathischen uses the buccal nerve as a way to back glands.

Otic ganglion as a distribution station

In addition to this actual parasympathetic component drag multiple motor and sensory branches of the mandibular nerve through the otic ganglion. But these have no functional relationship to this autonomic ganglion, but use it only as a distribution station.

  • Cranial nerve
  • Ganglion
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