Dr. Thanaa Al-Khishali
THE EAR
VESTIBULOAUDITORY SYSTEM
Major divisions of the ear, The external, middle, and internal region of the right ear
A section through the
external auditory meatus,
(SG) sebaceous gland,
(CG)ceruminous gland, (F)
hair follicle,
(C) cerumen
Internal ear
, the bony labyrinth, housing the membranous labyrinth which includes the saccule,
utricle, and semicircular ducts(equilibrium) and the cochlea for the sense of (hearing)
Structure of the macula
Scanning electron micrograph of the macula showing the otoliths
A diagram showing
the structure of
crista ampullaris
Diagram
showing the
structure of
crista ampullaris
A scanning electron
micrograph showing
the hair cells
Hair cells
Cochlea
CoCchleaC
Structure of the cochlea
Cochlear duct and
spiral ganglion. (SO)
spiral organ, (CD)
cochlear duct filled with
endolymph produced by
stria vascularis (STV), B
bone. (SV) scala
vestibuli, and(ST) scala
tympani are filled with
perilymph. (SG) spiral
ganglion
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