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30 Cards in this Set
- Front
- Back
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consists of fleshy auricle (pinna) and auditory canal
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outer ear
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designed to collect sound waves & direct them toward eardrum
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outer ear
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lined w/ hairs & ceruminous glands
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outer ear
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secrete cerumen to trap dust & foreign particles
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outer ear
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located in air-filled tympanic cavity in temporal bone
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middle ear
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contains tympanic membrane
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middle ear
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thin, semitransparent partition
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middle ear
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auditory (Eustachian) tube
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middle ear
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auditory ossicles
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middle ear
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malleus
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middle ear
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incus
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middle ear
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stapes
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middle ear
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attache to tympanic membrane
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middle ear
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attached to thin membrane-covered oval window
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middle ear
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two small muscles insert on auditory ossicles
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middle ear
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forms central portion of bony labyrinth & membranous labyrinth contains 2 chambers
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vestibule
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posterior utricle & anterior saccule are connected by a small duct
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vestibule
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three behind & above vestibule
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semicircular ducts
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arranged at right angles to one another
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semicircular ducts
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in front of vestibule
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cochlea
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scala vestibuli
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cochlea
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uperior chamber beginning at oval window, filled w/ perilymph
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cochlea
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scala tympani
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cochlea
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inferior chamber ending at round window filled w/ perilymph
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cochlea
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middle chamber seperated from cala vestibuli by vestibular membrane & scala tympani
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cochlea
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cochlear duct
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cochlea
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filled w/ endolymph
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cochlea
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spiral organ of corti
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cochlea
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rests of basilar membrane
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cochlea
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contains thousands of hair cells covered w/ jelly like tectorial membrane
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cochlea
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