Inner ear
Pathways
Topography
Bony labyrinth
Canalis nervi facialis
Foramen ovale
Apex partis petrosae
Meatus acusticus
internus
Synchondrosis
petrooccipitalis
Sulcus sinus petrosi
inferioris
Cellulae tympanicae
Canalis semicircu laris
anterior
Canalis semicircularis
lateralis
Crus osseum commune
Canalis semicircularis
posterior
Aqueductus vestibuli
Sulcus sinus sigmoidei
Foramen jugulare
a
Synchondrosis
sphenopetrosa
Sulcus nervi petrosi
majoris
Foramen lacerum
Canalis caroticus
Synchondrosis
sphenopetrosa
Apex partis petrosae
Meatus acusticus
internus
Semicanalis tubae
auditivae
Cavitas tympani
Cochlea
Canalis nervi facialis
Canalis semicircularis
lateralis
Fenestra vestibuli
Canalis semicircularis
anterior
b
Fig. 707a, b
Bony labyrinth, Labyrinthus osseus;
hollowed out of the petrous part of the temporal bone,
a
Posterior-superior view
b
Superior view
* Opening of the posterior canaliculus
Meatus
acusticus
internus
Cupula cochleae
Canalis
longitudinalis
modioli
Fundus meatus
acustici interni
Canalis spiralis
modioli
Scala vestibuli
Lamina
spiralis
secundaria
Lamina
spiralis
ossea
Scala
tympani
Lamina
modioli
Canalis
spiralis
cochleae
Tractus spiralis
foraminosus
Modiolus
cochleae
Tractus spiralis foraminosus
Area
vestibularis
inferior
Foramen
singulare
Area cochlearis
Area nervi facialis
Area vestibularis
superior
Crista
transversa
Meatus acusticus
internus
acustici interni
Fig. 708
Spiral canal of the cochlea, Canalis spiralis
cochleae;
opened along the axis of the modiolus;
superior view
Fig. 709
Internal acoustic meatus, Meatus
acusticus internus, and fundus of the internal
acoustic meatus, Fundus meatus acustici interni;
after partial removal of the posterior wall;
medial view.
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