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32 Cards in this Set

  • Front
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the cone of light seen when looking into the ear points to one of the ossicles of the ...
malleus
the canal and air make up the ...
external ear
the 3 ossicles and air make up the ...
middle ear
the ... is made up of a bunch of other structures and is fluid filled
inner ear
the lateral wall of the middle ear is ...
tympanic membrane
the medial wall of the middle ear is the ...
oval window
the anterior wall of the middle ear is the ...
pharyngotympanic (eustachian) tube
the posterior wall of the middle ear is an...
opening to mastoid air cells
ossicles:
-hammer or ...
-anvil or ...
-stirrup or ...
malleus
incus
stapes
what are the 2 muscles in the middle ear that
-reduce the vibrations of the malleus and stapes
-prevents damage to the internal ear
tensor tympani
stapedius
the tensor tympani attaches to the ...
malleus
pharyngotympanic tube:
-aka ... tube or auditory tube
-connects middle ear with ...
-allows ... in middle ear
eustacian
nasal pharynx
pressure equalization
inner ear in the bony labyrinth
-cavity in ... part of temporal bone
-contains a fluid called ...
-3 parts: chochlea which contains ..., vestibule which contains ... and ..., and semicircular canals which contain ...
-petrous
-perilymph
-chochlear duct
-utricle and saccule
-semicircular ducts
inner ear in the membranous labyrinth
-communicating ... and ... suspended within the bony labyrinth
-filled with ...
3 parts: cochlear which deals with ..., vestibular which deals with ..., and semicircular which deals with ...
-sacs and ducts
-endolymph
-hearing
-position of the head at rest
-changes in head position
conduction of sound:
-sound waves into ...
-... vibrates
-... vibrate
-vibration of ... initiates "waves" in fluid of inner ear (...)
-waves travel up and around within ... and back down to ... window
external ear
tympanic membrane
ossicles
stapes
cochlea
cochlea
round
what part of the ear sets up fluid waves in the cochlear?
middle ear
what are these 2 mechanisms of balance?
-at right angles to each other
-respond to gravity when head is at rest
saccule
utricle
what are these mechanisms of balance?
-at right angles to each other lying in all 3 planes
-respond to changes in position, i.e. acceleration and deceleration
semicircular canals
nerve transmission of hearing and balance:
-cranial nerve ...
-passes from inner ear through ... to brainstem
-2 parts: cochlear division affects ..., and vestibular division affects ...
-... nerve lies next to it
-both nerves pass through the ...
-CN 8: vestibulocochlear n.
-temporal bone
-hearing
-balance
-facial nerve (CN 7)
-internal acoustic meatus
what can put pressure on the facial nerve and vestibulocochlear nerve as they pass through the internal acoustic meatus?
acoustic neuroma
acoustic neuromas are:
-benign
-arise from CN ...
-grow slowly
-expand, compressing the ..., causing CN dysfunction
CN 8
brainstem
what are these?
-progressive hearing loss in one ear
-ringing in the same ear
-a sense of imbalance
-weakness of facial muscles
-loss of taste: less salivation
losses expected from acoustic neuromas
what are the 2 types of hearing loss?
conductive and neural (sensorineural)
conductive hearing loss:
-conduction of sound is impaired through the ... or ... ear
-examples: ... build up, ... in children, ... in adults
-external or middle
-wax
-middle ear infections
-otosclerosis
sensorineural hearing loss
-loss of ...
-lesion of CN ...
-examples are ...: a progressive loss of hair cells at base of cochlea usually in the elderly; and ...: an increase in endolymph which usually leads to tinnitus (ringing) and/or vertigo
-hair cells
-CN 8
-presbycusis
-Meniere's disease
what do you do for Weber's test?
place a vibrating tuning fork midline of the skull or on the bridge of the nose
Weber's test is abnormal if ...
you hear better in one ear
weber's does not tell you what kind of sensory loss it is.

patients with a conductive hearing loss will hear the vibrations ...

patients with a sensorineural hearing loss will hear the vibrations ...
-on the side of the defective middle ear

-better in the normal ear
with the Weber test, a person hears better in the ear (with/without) the conductive loss
with
what test is used to determine whether a patient has a conductive hearing loss?
rinne test
what do you do for a Rinne test?
put the base of a vibrating tuning fork on their mastoid process. When they stop hearing it, you place the tuning fork next to their ear. See if they hear it again.
In Rinne Test,
-if the patient hears the sound again, then sensory loss is on the ...
-if the patient does not hear the sound again, then conductive loss is on the ...
-Always test the other ear for conformation
opposite side
same side