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20
The ear
(Vestibulo-acoustic
Organs)
Tuba auditiva
Median line
Sella turcica
Cavum tympani
A. carotis int.
Membrana
tympani
Superior border
of petrous part
Meatus
acusticus ext.
Cochlea
N. facialis
Sinus
sigmoudeus
Ductus
semicircularis
anterior
Antrum
mastoideum
Foramen
magnum
Ductus
semicirc. lat.
Meatus acusticus
internus
Saccus endolymphaticus
Utriculus
Ductus
semicirc.
post.
20-01. Location of vestibulo-acoustic organs in the temporal bone (Scheme).
Ampulla ductus semicircularis anterior
Ductus semicircularis anterior
Utriculus and macula utriculi
Sacculus and macula sacculi
Ampulla ductus semicircularis
lateralis
Spiral organ
Ductus semicircularis lateralis
Ductus semicircularis
posterior
Ductus reuniens
Ductus cochlearis
Ampulla ductus
semicircularis posterior
Saccus
endolymphaticus
Ductus endolymphaticus
20-02. Scheme showing the structure of membranous labyrinth.
20-001
Cochlea, and
External
and Middle Ear
Tympanic cavity
Helicotrema
N. tympanicus
Promontrium
Bone
Bone
Internal acustic meatus
Cochlear nerve
20-03. Cochlea, vertical section, general view 1. Monkey, Held’s hematoxylin stain, x 4.
Cavum tympani
sv
N. tympanicus
dc
Promontrium
sv
st
st
Bone
sv
dc
dc
sv
st
st
Ggl. spirale
Cochlear nerve
20-04. Cochlea, vertical section, general view 2. Monkey, Held’s hematoxylin stain, x 10.
st
Spiral ganglion
Bone
Stria vascularis
Vestibular membrane
sv
Spiral limbus
dc
Organ of Corti
ssi
ssl
Osseous spiral lamina
Lamina basilaris
Spiral ligament
Bone
Cochlear nerve
st
Spiral ganglion
20-05. Canalis cochlearis, vertical section 3. Monkey, Held’s hematoxylin stain, x 25.
Vestibular membrane
Stria vascularis
sv
dc
Spiral prominence
Tectorial membrane
Organ of Corti
Spiral limbus
Cells of Hensen
sse
ssi
N
T
Lig. spirale
Cells of
Claudius
Outer pillar
Cells of Deiters
Lamina basilaris
Inner pillar
st
N. cochlearis
Osseous
spiral lamina
20-06. Cochlear duct and organ of Corti 1. Monkey, Held’s hematoxylin stain, x 64.
Bone
Vestibular membrane
sv
Stria vascularis
dc
Spiral prominence
Spiral limbus
Tectorial membrane
Organ of Corti
ssi
sse
Spiral ligament
Osseous spiral
lamina
Cochlear nerve
Tunnel
st
Lamina basilaris
20-07. Cochlear duct and organ of Corti 2. Monkey, H-E stain, x 50.
Stria vascularis
Vestibular membrane
sv
Spiral
prominence
dc
Tectorial membrane
Spiral limbus
Cells of Hensen
Cells of
Claudius
ssi
N
sse
T
Inner pillar cell
Osseus spiral
lamina
Cochlear nerve
Outer pillar cell
Lamina basilaris
Cells of
Deiters
st
20-08. Cochlear duct and organ of Corti 3. Monkey, H-E stain, x 64.
Spiral ligament
sv
Inner hair cell
Tectorial membrane
dc
Outer hair cells
External tunnel
Spirl limbus
Cells of Hensen
N
ssi
sse
T
Inner pillar cell
Cochlear nerve
st
Cells of Deiters
Outer pillar cell
Inner pillar
Outer pillar
20-09. Organ of Corti. Monkey, H-E stain, x 100.
Cells of Claudius
Lamina basilaris
T: Tunnel
N: Space of Nuel
Head plate of inner pillar and
phalangeal process of outer pillar
Epithelium of limbus
Outer hair cell of the
1st row
Phalangeal process
of Deiters cell
Outer hair cell of the 3rd row
Inner hair cell Membrana
tectoria
Border cell
Limbus
laminae
spiralis
External tunnel
Cells of Hensen
Ve
Sulcus
spiralis
internus
Ty
Periosteum
Lamina
spiralis
ossea
Stria vascularis
Blood
vessels
Prominentia
spilaris
Sulcus
spiralis
externus
Lig.
spilare
Inner
pillar
Endothelium of
acala tympani Cochleal nerv
(myelinated)
Inner
phalangeal
cell
Spiral
vessel
Inner
pillar
cell
Cells of
Deiters Lamina
Fiber of
basilaris
Retzius
Outer pillar cell
Outer
pillar
Unmyelinated nerve fibers
Cells of
Claudius
T: Tunnel
Nu: Space of Nuel
Ve: Labium vestibuli
Ty: Labium tympani
20-10. Scheme showing the structure of spiral organ 1.
IH:
inner hair cell
H1,H2,H3:
outer hair cell
D1,D2,D3:
Deiters’ cell
Head plate of
Outer hair cell
inner pillar cell
Inner phalangeal cell
Phalangeal process of
outer pillar cell
Cell of Hensen
Inner hair cell
Border cell
Phalangeal process of
Deiters’ cell
20-11. Reticular membrane (Scheme).
①
②
20-12.
Spiral ganglion.
Monkey, Held’s
hematoxylin stain,
x 160.
Bone
Vestibular membrane
Spiral
ligament
Stria vascularis
Spiral
ligament
Spiral prominence
20-13.
Stria vascularis.
Monkey,
H-E stain,
x 100.
Skin
Mucous membrane
20-14.
Tympanic
membrane 1.
Monkey,
H-E stain,
x 64.
Bone
Skin
Radial fibers
Mucous membrane
Circular fibers
20-15.
Tympanic
membrane 2.
Monkey,
H-E stain,
x 160.
Elastic cartilage
Gl. cerminosa
Lumen
Dermis
20-16
Tuba auditiva
externa,
transverse
section.
Monkey,
H-E stain,
x 2.5.
20-002
Vestibular
Organs
Secondary tympanic membrane
Crista amp. posterioris
Macula sacculi
Round window
Bone
Bone
Bone
Sacculus
Vestibular ganglion
Vestibulum
Ampulla posterior
20-17. Vestibulum 1. Sacculus and ampulla semicircularis posterior. Monkey, Held’s
hematoxylin stain x 5
Utriculus
Canalis semicircularis
Stapes
Macula utriculi
Bone
Bone
Vestibulum
Vestibular nerve
20-18. Vestibulum 2. Stapes and utriculus 1. Monkey, H-E stain, x 5.
Stapes
Vestibulum
N. facialis
Utriculus
Bone
Base of crista ampullaris posterior
Bone
Macula utriculi
20-19. Vestibulum 3. Stapes and utriculus 2. Monkey, H-E stain, x 5.
N. facialis
Vestibulum
Ampulla et crista amp. posterior
Base of crista ampullaris ant. et lat.
Utriculus
20-20. Vestibulum 4. Macula utriculi and crista ampullaris posterior.
Monkey, H-E stain, x 5.
Vestibulum
N. facialis
Ampulla et crista amp. anterioris
Bone
Bone
Ampulla posterior
Ampulla et crista amp. lateralis
20-21. Vestibulum 5. Crista ampullaris anterior et lateralis. Monkey,
H-E stain, x 5.
Bone
20-22. Crista ampullaris 1. Monkey, H-E stain, x 13.2.
Cupula
Neuroepitelium
Supporting cells
Nerves
Bone
20-23.
Crista ampullaris
2.
Monkey,
H-E stain,
x 50.
Utriculus
Otolithic membrane
Sensory epithelium
Vestivulum
Bone
20-24. Macula utriculi 1. Monkey, H-E stain, x 33.
Otolithic membrane
Otoliths
Neuroepithelium
Supporting cells
Basement membrane
Nerves
20-25. Macula utriculi 2. Money, H-E stain, x 100.
20-003
Horizontal Sections
of
Human Temporal
Bone
②
③
①
④
⑤
⑥
Bone
⑪
⑩
⑨
⑧
⑦
20-26. Horizontal section of human temporal bone 1. H-E stain, x 1.0.
②
③
④
①
⑤
⑮
⑥
⑦
⑧
Bone
⑬
⑭
⑫
⑪
⑩
⑨
20-27. Horizontal section of human temporal bone 2. H-E stain, x 1.0.
②
①
③
④
⑤
⑪
⑥
⑦
⑩ ⑨
⑧
20-28. Horizontal section of human temporal bone 3. H-E stain, x 1.0.
③
①
④
⑤
⑥
②
⑦
⑪
⑫
⑧
⑯
⑩
⑨
⑬
⑭
⑮
Bone
20-29. Horizontal section of human temporal bone 4. H-E stain, x 1.8.