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33 Cards in this Set

  • Front
  • Back
auditory canal
channel that leads from the pinna to the eardrum
auditory meatus
auditory canal
auditory nerve fibers
carry impulses from the inner ear to the brain(cerebral cortex). These fibers compose the vestibulocochlear nerve (cranial nerve 8).
auditory tube
channel between the middle ear and the nasopharynx;eustachian tube
auricle
flap of the ear;the protruding part of the external ear,or pinna
cerumen
waxy substance secreted by the external ear;also called ear wax
cochlea
snail-shaped,spirally wound tube in the inner ear;contains hearing- sensitive receptor cells
endolymph
fluid within the labyrinth of the inner ear
eustachian tube
auditory tube
incus
second ossicle(bone)of the middle ear;incus means anvil
labyrinth
maze-like series of canals of the inner ear. This includes the cochlea,vestibule,and semicircular canals
malleus
first ossicle of the middle ear;malleus means hammer
organ of Corti
sensitive auditory receptor area found in the cochlea of the middle ear
ossicle
small bone of the ear;includes the malleus,incus, and stapes
oval window
membrane between the middle and the inner ears
perilymph
fluid contained in the labyrinth of the inner ear
pinna
auricle;flap of the ear
semicircular canals
passages in the inner ear associated with maintaining equilibruim
stapes
third ossicle of the middle ear
tympanic membrane
membrane between the outer ear and the middle ear;also called the eardrum
vestibule
central cavity of the labyrinth,connecting the semicircular canals and the cochlea. The vestibule contains two structures,the saccule and the utricle, that help maintain equilibrium
acoustic neuroma
benign tumor arising from the acoustic vestibulocochlear nerve (8th cranial nerve)in the brain
cholesteatoma
collection of skin cells and cholesterol in a sac within the middle ear
deafness
loss of the ability to hear
Meniere disease
disorder of the labyrinth of the inner ear marked by elevated endolymph pressure within the cochlea(cochlear hydrops)and semicircular canals(vestibular hydrops)
otitis media
inflammation of the middle ear
otosclerosis
hardening of the bony tissue of the labryrinth of the ear
tinnitus
sensation of noises (ringing,buzzing,whistling,
booming)in the ears
vertigo
sensation of irregular of whirling motion either of oneself or of external objects
audiometry
testing the sense of hearing
ear thermometry
measurement of the temperature of the tympanic membrane by detection of infrared radiation from the eardrum
otoscopy
visual examination of the ear with an otoscope
tuning fork test
test of and ear conduction using a vibration source(tuning fork)