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15 Cards in this Set

  • Front
  • Back
3 ear regions
outter, middle, inner
auricle (pinna)
[O.E.]
projecting flap of ear, sound waves enter
cerumen
waxy substance, lubricates and protects ear
auditory canal
(external auditory meatus)
[O.E.]
leads from the pinna and secretes cerumen
tympanic membrane
(eardrum)
membrane b/t outter and inner ear
ossicles
[M.E.]
3 small bones in eardrum, conduct sound waves thru middle ear
malleus, incus, stapes
3 small bones in eardrum
oval window
[M.E.]
seperates middle ear from outter ear
eustachian tube
leads from middle ear to throat
cochlea
leads from oval window
perilymph & endolymph
liquids thru which vibrations travel, in cochlea
organ of corti
auditory receptor, receive vibrations from auditory liquids
inner ear
labyrinth
auditory nerve fibers
end in cerebral cortex, vibrations are heard
vestibule
connects cochlea to semicircular for balance