Ear
BonyandMembranousLabyrinths(continued)
Plate98
Anterior semicircular canal and duct
Bony and membranous labyrinths: schema
Posterior semicircular
canal and duct
Common bony and
membranous limbs
Lateral semicircular
canal and duct
Stapes in oval
(vestibular) window
Endolymphatic duct
in vestibular aqueduct
Incus
Otic capsule
Malleus
Tympanic cavity
External acoustic meatus
Tympanic membrane
Umbo
Round (cochlear) window
(closed by secondary
tympanic membrane)
Ampullae
Dura mater
Endolymphatic sac
Utricle
Saccule
Helicotrema of cochlea
Ductus reuniens
Scala vestibuli
Cochlear duct
Scala tympani
Cochlear aqueduct
Vestibule
Otic capsule
Pharyngotympanic (auditory, eustachian) tube
Section through turn of cochlea
Osseous
spiral lamina
Nerve fibers
Modiolus of cochlea
Spiral ganglion
(of Corti)
Scala tympani
Cochlear nerve
Scala vestibuli
Vestibular (Reissner’s)
membrane
Cochlear duct
Spiral ligament
Tectorial membrane
Spiral organ (of Corti)
Basilar membrane
Osseous cochlea
Outer hair cells
Pillar (rod) cells
Inner hair cell
