Ear
1
BonyandMembranousLabyrinths
Plate97
Posterior
Lateral
Semicircular canals
Common bony limb
Anterior
Ampullae
Vestibule
Cochlea
Posterior
Lateral
Anterior
Semicircular canals
Elliptical recess
Cochlear recess
Spherical recess
Helicotrema
Scala vestibuli
Scala tympani
Utricle
Endolymphatic duct
Saccule
Cochlear nerve
Cochlear duct (basal turn)
Vestibular ganglion
(of Scarpa)
Vestibular nerve
Vestibulocochlear nerve (VIII)
Round (cochlear) window
Anterior semicircular duct
Anterior ampulla
Lateral ampulla
Oval (vestibular)
window
Cochlear
cupula
Round (cochlear)
window
Common
membranous limb
Posterior ampulla
Inferior part of vestibular nerve (from
saccule and posterior ampulla)
Osseous spiral
lamina
Internal opening of
vestibular aqueduct
(for endolymphatic
duct)
Vestibule
(note
perforations
for nerve
fibers)
Lateral
semicircular
duct
Posterior
semicircular
duct
Hamulus
of spiral
lamina
Superior part of vestibular nerve
(from utricle and anterior and
lateral ampullae)
Right bony labyrinth (otic capsule), anterolateral view:
surrounding cancellous bone removed
Dissected right bony labyrinth (otic capsule):
membranous labyrinth removed
Right membranous labyrinth with nerves: medial view
See±also±
Plate 125
±
