Vestibular ganglion

The vestibular ganglion (also called Scarpa's ganglion) is a ganglion situated within the internal auditory meatus that lodges cell bodies of first-order sensory neurons of the vestibular nerve. The superior division and inferior division of the vestibular nerve meet at the ganglion; henceforth, the fibres of second-order neurons of the vestibular nerve merge with those of the cochlear nerve (whose first-order neurons have already synapsed at the spiral ganglion) to proceed towards the CNS as a single unified vestibulocochlear nerve (cranial nerve VIII).[1]

Vestibular ganglion
Details
Identifiers
Latinganglion vestibulare,
ganglion Scarpae
NeuroNames495
TA98A14.2.01.123
TA26309
FMA53435
Anatomical terms of neuroanatomy

Anatomy

Structure

The ganglion contains the cell bodies of bipolar neurons whose peripheral processes form synaptic contact with hair cells of the vestibular sensory end organs. These include hair cells of the cristae ampullares of the semicircular duct, and the maculae of the utricle and saccule.[1]

Development

At birth, it is already close to its final size.[2]

Etymology

It is named for Antonio Scarpa.[3][4]

References
  1. Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). p. 498. ISBN 978-0-7295-3752-0.
  2. Sato H; Sando I; Takahashi H (September 1992). "Three-dimensional anatomy of human Scarpa's ganglion". Laryngoscope. 102 (9): 1056–63. doi:10.1288/00005537-199209000-00018. PMID 1518353.
  3. synd/2928 at Who Named It?
  4. A. Scarpa. Anatomicarum annotationum. 2 volumes, Modena and Pavia, 1779, 1785. 2nd edition, Milano, 1792.


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