adj.

耳の

関: auris、ear

WordNet

of or relating to near the ear (同)auricular
fruiting spike of a cereal plant especially corn (同)spike, capitulum
attention to what is said; "he tried to get her ear"
good hearing; "he had a keen ear"; "a good ear for pitch"
the sense organ for hearing and equilibrium
having cells that lack membrane-bound nuclei (同)procaryotic

PrepTutorEJDIC

〈C〉『耳』 / 《単数形で》『聴覚』,聴力,音感 / 《単数形で》じっと聞くこと,傾聴 / 〈C〉耳の形をした物
(麦・とうもろこしなどの)穂

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/09/18 16:51:57」(JST)

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The otic ganglion is a small, oval shaped, flattened parasympathetic ganglion of a reddish-gray color, located immediately below the foramen ovale in the infratemporal fossa. It gives innervation to the parotid gland for salivation.

It is one of four parasympathetic ganglia of the head and neck. (The others are the submandibular ganglion, pterygopalatine ganglion, and ciliary ganglion).

It is occasionally absent.^[1]

Filaments

Filaments that pass through the ganglion without synapsing:

Nerve to tensor tympani
Nerve to tensor veli palatini

Both are innervated by the medial pterygoid nerve from Trigeminus V3 (mandibular nerve)

Branches of communication

Its sympathetic postganglionic fibers consists of a filament from the plexus surrounding the middle meningeal artery.

Preganglionic parasympathetic fibers originate from the glossopharyngeal nerve via the lesser petrosal nerve. The lesser petrosal nerve is a continuation of the glossopharyngeal nerve after it exits the skull via the jugular foramen and innervates the tympanic plexus. Postganglionic parasympathetic fibers travel with the sympathetic fibers of the auriculotemporal nerve (a branch of CN V3) to supply the parotid gland. All postsynaptic parasympathetics will use some branch of the Trigeminal Nerve to get from one of four parasympatheic ganglia (Otic, Ciliary, Submandibular, and Pterygopalatine) to their destinations in either smooth muscle or glandular tissue (secretomotor).

A slender filament (sphenoidal) ascends to the nerve of the Pterygoid canal, and a small branch connects with the chorda tympani.

It is connected by two or three short filaments with the nerve to the Pterygoideus internus, from which it may obtain a motor, and possibly a sensory root.

Otic ganglion

Distribution

Its branches of distribution are: a filament (V3 to Medial Pterygoid mm) to the Tensor tympani, and one to the Tensor veli palatini.

The former passes backward, lateral to the auditory tube; the latter arises from the ganglion, near the origin of the nerve to the Pterygoideus internus, and is directed forward.

The fibers of these nerves are, however, mainly derived from the nerve to the Pterygoideus internus.

Clinical Correlations

Frey's syndrome in which salivation will induce perspiration at the parotid region, accompanied by erythema.

Additional images

Plan of the facial and intermediate nerves and their communication with other nerves.
Diagram of efferent sympathetic nervous system.
Dissection of otic ganglion
Otic ganglion

References

^ Roitman R, Talmi YP, Finkelstein Y, Sadov R, Zohar Y (1990). "Anatomic study of the otic ganglion in humans". Head Neck 12 (6): 503–6. doi:10.1002/hed.2880120610. PMID 2258290.

Shimizu T (1994). "Distribution and pathway of the cerebrovascular nerve fibers from the otic ganglion in the rat: anterograde tracing study". J. Auton. Nerv. Syst. 49 (1): 47–54. doi:10.1016/0165-1838(94)90019-1. PMID 7525688.

External links

cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (V, IX)
Otic+ganglion at eMedicine Dictionary

This article incorporates text from a public domain edition of Gray's Anatomy.

UpToDate Contents

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English Journal

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Vasconcelos RO1, Alderks PW2, Sisneros JA2,3.
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… Analyses of ER stress reporters reveal that ER stress occurs physiologically during medaka early embryonic development, particularly in the brain, otic vesicle, and notochord, resulting in ATF6α- and ATF6β-mediated induction of BiP, and that knockdown of the α1 chain of type VIII collagen reduces such ER stress. …
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Related Pictures

★リンクテーブル★

リンク元	「耳」「auris」
拡張検索	「beta-lactam antibiotic」「osmotically」「osmoticum」「Hutchinson melanotic whitlow」「idiopathic nephrotic syndrome」
関連記事	「ot」

「耳」

Nerve: Otic ganglion
	The otic ganglion and its branches.
	Mandibular division of trifacial nerve, seen from the middle line. The small figure is an enlarged view of the otic ganglion.
Latin	ganglion oticum
Gray's	p.897
Innervates	parotid gland
From	lesser petrosal nerve