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48 Cards in this Set

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b.
otitis media
identify the middle ear infection?
what is the medical term for this?
1. frontal
3. sphenoid
9. temporal
10. occipital
11. parietal
identify bones number:
1.
3.
9.
10
11.
identify the mastoid process:
mastoid process
identify the labeled structures:
a.
b.
c.
d.
e.
a. malleus
b. incus
c. stapes
d. semicircular canals
e. facial nerve
identify the labeled structures:
a.
b.
c.
d.
e.
f.
a. tympanic membrane
b. jugular vein
c. eustachian tube
d. cochlea
e. carotid artery
f. cochleovestibular nerve
identify the labeled structures:
a.
b.
c.
d.
e.
f.
g.
a. triangular fossa
b. scapha
c. helix
d. antihelix
e. lobule
f. antitragus
g. tragus
there are 6 walls to the inner ear but the most important are the following 4:
1.
2.
3.
4.
1. Lateral: tympanic membrane
2. Medial: oval window
3. Anterior: pharyngotympanic (eustachian)tube
4. Posterior: opening to mastoid air cells
the middle ear is filled with ...
air
the contents of the middle ear are the ... and the muscles.
ossicles
name the 3 ossicles of the middle ear:
1.
2.
3.
malleus
incus
stapes
name the muscles of the middle ear:
1.
2.
tensor tympani
stapedius
what are the functions of the muscles in the middle ear?
reduce the vibrations of malleus & stapes to prevent damage to the internal ear
identify the labeled structures:
a.
b.
c.
d.
e.
f.
g.
a. malleus
b. anvil
c. stapes
d. oval window
e. tympanic membrane
f. tendon of tensor tympani
g. stapedus tendon
eustachian tube connects middle ear with ...
nasopharynx
what is the function of the eustachian tube?
pressure equalization in middle ear
if you have less pressure on eardrum, (flying), then need to equalize pressure inside by opening tube to let air ... by ...
out
yawning
the eustachian tube is also know as the ...
pharyngotympanic Tube
to equalize pressure increases outside of eardrum you would need to ...
holding nose closed and “blowing” air up into middle ear
the bony labyrinth is located in the ...
inner ear
the bony labyrinth is in a cavity in the ... of the ... bone
petrous part
temporal
the bony labyrinth contains a fluid called ...
perilymph
name the 3 parts to the bony labyrinth:
1.
2.
3.
1. Cochlea: cochlear duct
2. Vestibule: utricle and saccule
3. Semicircular canals: semicircular ducts
identify the labeled structures:
a.
b.
c.
d.
e.
f.
g.
h.
i.
a. perilymph
b. endolymph
c. semicircular duct
d. vestibule
e. cochlea
f. cochlear duct
g. round window
h. oval window
i. ampullae
the membranous labyrinth is located in the ... and is filled with ...
inner ear
endolymph
the membranous labyrinth is composed of ... and ... suspended within the ...
communicating sacs
ducts
bony labyrinth
name the 3 parts of the membranous labyrinth and their function:
1.
2.
3.
1. Cochlear: hearing
2. Vestibular: position of head at rest
3. Semicircular: changes in head position
in the conduction of sound, sound waves travel into the ... and vibrate the ... that in turn vibrates the ... vibration of the ... initiates “waves” in fluid of inner ear (cochlea) the waves travel up and around within the ... and back down to ...
external ear
tympanic membrane
ossicles
stapes
cochlea
round window
saccule and utricle are at right angles to each other
and respond to ... when head is at rest
gravity
there are 3 ... all at right angles to each other lying
in all 3 planes. they respond to changes in ... i.e. ... and ...
semicircular canals
position
acceleration
deceleration
the nerve responsible for transmission of hearing and balance is cranial nerve ... the ... nerve
VIII
vestibulocochlear
cranial nerve 8 passes through the temporal bone to the ...
brainstem
CN8 has two parts, what are they and what is their function:
1.
2.
Cochlear division: hearing
Vestibular division: balance
what other cranial nerve lies next to CN8 ...
CN7 - facial nerve
Acoustic neuromas are benign and arise from ... the grow slowly and expand compressing the ... causing CN dysfunction
CNVIII
brainstem
what losses are expected with acoustic neromas:
1.
2.
3.
4.
5.
6.
hearing loss one ear
ringing
imbalance
weakness of facial muscles
loss of taste
less salivation
what is conductive hearing loss?
when the conduction of sound is impared
name 3 examples of conductive hearing loss:
1.
2.
3.
wax
middle ear infections
otosclerosis (growth of spongy bone in the inner ear)
what causes sensorineural hearing loss?
1.
2.
loss of hair cells
lesion of VIII
what is presbycusis?
progressive loss of hair cells at base of cochlea
what is Meniere’s Disease?
increase in endolymph; the patient suffers also from tinnitus and/or vertigo
how do you perform a weber's test?
place the tuning fork behind the person's head
what is considered an abnormal weber test?
hear better in one ear
if there is a sensory loss in one ear, what ear hears better in the weber test?
healthy ear
if there is a conductive loss in one ear, what ear hears better in the weber test?
in ear with conductive loss
to identify whether hearing loss is conductive or sensory, what do you need to do in conjunction with the weber test?
rinne test
how do you perform the rinne test?
put the tunning fork near each ear
if you have an abnormal weber test and hear better in the right ear, then do the rinne test and hear better in the left ear, what kind of loss is it?
conductive
if you have an abnormal weber test and hear better in the left ear, and do a rinne test and hear better in the left ear also, what kind of loss do you have?
sensory