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Cochlear Division of the Acoustic Nerve

Part of the cochlear division of the acoustic nerve, highly magnified. (Henle.)

The cochlear nerve (n. cochlearis) divides into numerous filaments at the base of the modiolus; those for the basal and middle coils pass through the foramina in the tractus spiralis foraminosis, those for the apical coil through the canalis centralis, and the nerves bend outward to pass between the lamellæ of the osseous spiral lamina. Occupying the spiral canal of the modiolus is the spiral ganglion of the cochlea (ganglion of Corti) (Fig. 933), consisting of bipolar nerve cells, which constitute the cells of origin of this nerve. Reaching the outer edge of the osseous spiral lamina, the fibers of the nerve pass through the foramina in the tympanic lip; some end by arborizing around the bases of the inner hair cells, while others pass between Corti’s rods and across the tunnel, to end in a similar manner in relation to the outer hair cells. The cochlear nerve gives off a vestibular branch to supply the vestibular end of the ductus cochlearis; the filaments of this branch pass through the foramina in the fossa cochlearis (page 1048).

(Text modified from Gray's 1918 Anatomy)

Links: | Inner Ear Development | Hearing and Balance Development | Gray's 1918 Anatomy

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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History \| Historic Embryology Papers)

iBook - Gray's Embryology
	iTunes link \| iBooks Store Description - an extract of the embryology content from Anatomy of the Human Body By Henry Gray Philadelphia: Lea & Febiger, 1918. Releases First Edition - Jan 2012 Second Edition - March 2012 Repaired formatting and image display issues related to Pad rotated display and minor editing issues. Print length 169 pages, 41.6 MB, Language English. The current website also includes numerous images from this textbook, see Anatomy of the Human Body by Henry Gray and Category:Gray's 1918 Anatomy. Note the also Historic Disclaimer.

Reference

Gray H. Anatomy of the human body. (1918) Philadelphia: Lea & Febiger.

Cite this page: Hill, M.A. (2024, April 27) Embryology Gray0933.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Gray0933.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	08:14, 19 August 2012		500 × 360 (54 KB)	Z8600021 (talk \| contribs)	==Cochlear Division of the Acoustic Nerve== Part of the cochlear division of the acoustic nerve, highly magnified. (Henle.) The cochlear nerve (n. cochlearis) divides into numerous filaments at the base of the modiolus; those for the basal and middle co

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Anatomy of the Human Body by Henry Gray