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30 Cards in this Set

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