g23a: middle ear - anatomy resources morton.… · anat 6010- medical gross anatomy. external ear...
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G23A: Middle Ear
David A. Morton, Ph.D.
Syllabus - Pg. 84
ANAT 6010- Medical Gross Anatomy
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External Ear
GAFS Fig. 8.278
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External Ear
GAFS Fig. 8.278
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External Ear
Auricle
External auditory canal
Tympanic membrane
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CN VII, X CN IX
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Middle Ear
Tympanic membrane
Vestibular window
Cochlear window
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Middle Ear
Auditory (pharyngotympanic/Eustachian) tube
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Middle Ear
Ossicles
• Malleus
• Incus
• Stapes
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Stapedius m.
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Middle Ear
Vestibular (oval) window
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Identify this muscle?
Identify this nerve?
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A lesion in this nerve
(*) would result in:
A. Alteration in taste
B. Decrease in parotid
gland activity
C. Decrease in
Submandibular gland
activity
D. Ringing in the ears
*
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Internal Ear
Vestibule
Cochlea
Semicircular canals
CN VIII
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Internal Ear
Vestibule
Cochlea
Semicircular canals
CN VIII
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Internal Ear
Vestibule
Cochlea (round/cochlear window)
Semicircular canals
CN VIII
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Internal Ear
Vestibule
Cochlea
Semicircular canals
CN VIII
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Internal Ear
Vestibule
Cochlea
Semicircular canals
CN VIII (vestibulocochlear nerve)
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THANK-YOU