Internal acoustic pathway

The meatus acusticus internus is the internal auditory canal passing through the os temporale . It begins in the porus acusticus internus . Its floor, the fundus meatus acustici interni , is divided into two floors by the crista transversalis . Each floor can be further divided into an anterior and posterior part, in which the fibers of the cranial nerves pass .

Upper floor:

Fundus meatus acustici interni – schematic view of the right meatus from the inner back

• front part – area nervi facialis , the facial nerve passes here
• back part – area vestibularis superior , the utricampullary part of the vestibular nerve passes here

Lower floor:

• anterior part – tractus spiralis foraminosus for fibers of the cochlear nerve
• back part - area vestibularis inferior , the saccular part of the vestibular nerve passes through this

Links

External links

• HORKÝ, Drahomír – NOVÁKOVÁ, Květoslava. Morfologie orofaciálního systému pro studenty zubního lékařství [online] . 2. edition. Publikováno online. 2011. Available from <https://mefanet.upol.cz/clanky.php?aid=58>. ISBN 978-80-244-2702-7.

References

• ČIHÁK, Radomír – GRIM, Miloš. Anatomie. 2. edition. Praha : Grada Publishing, 2001. 497 pp. vol. 1. ISBN 80-7169-970-5.

• ČIHÁK, Radomír – GRIM, Miloš. Anatomie. 2., upr. a dopl edition. Praha : Grada Publishing, spol. s. r. o, 2004. 673 pp. vol. 3. ISBN 80-247-1132-X.