Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PHA BLK 5 > Structures & Functions of the Ear/Types of Hearing Loss > Flashcards

Structures & Functions of the Ear/Types of Hearing Loss Flashcards

1
Q

made of cartilage
collect sound and direct to ear canal
helps w/ localization
protects the middle ear components
amplifies high frequencies

A

pinna or auricle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

contains cerumen (wax) glands
funnels sound to the tympanic membrane

A

external auditory canal (EAC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

separate outer ear from middle ear
vibrates in response to acoustic energy
where acoustic energy is changed into mechanical energy

A

tympanic membrane (ear drum)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

small, air-filled space within the temporal bone
lined w/ mucous membrane
move mechanical energy to the inner ear

A

middle ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

auditory ossicles (ossicular chain)

A

malleus (hammer)
incus (anvil)
stapes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

first bone in the chain
attached to the tympanic membrane

A

malleus (hammer)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

middle bone

A

incus (anvil)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

last bone
attached to the oval window

A

stapes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

separates the middle ear from the inner ear

A

oval window

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

pressure relief port

A

round window

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

equalizes pressure between the middle ear with the nasopharynx

A

Eustachian tube (ET)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

consists of the cochlea and semi-circular canal
fluid filled space in the temporal bone
contains organ for hearing and balance

A

inner ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

snail-like, fluid filled structure
disrupts the basilar membrane, which serves as a base for the organ of Corti (contains hair cell)

A

cochlea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

high pitch

A

= base of cochlea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

low pitch

A

= spec of cochlea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

regulates balance
within the inner ear
shares fluid with cochlea
consists of three semi-circular canals

A

vestibular system

17
Q

carries signals for hearing and balance from the inner ear through the brain stem to the brain

A

auditory/acoustic nerve (CN VIII)

18
Q

energy transmission flow

A

acoustic–mechanical–hydraulic (mechanical)–electrical

19
Q

when the pathway of sound is blocked in the outer ear or middle ear

A

conductive hearing loss (CHL)

20
Q

symptoms of CHL

A

speak softer
body/head noises are more noticeable
pressure in the ear

21
Q

CHL in the external ear

A

cerumen impaction
foreign body
deformities
collapsed ear canal

22
Q

CHL in the middle ear

A

middle ear infection (otitis media)
ruptured ear drums
otosclerosis

23
Q

treatment of CHL

A

temporary will resolved on its own
cleansing, medicine, or surgery

24
Q

typically permanent and untreatable

A

sensorineural hearing loss (SNHL)

25
Q

symptoms of SNHL

A

speak louder
difficulty understanding speech
tinnitus
loss in high frequencies

26
Q

causes of SNHL

A

congenital, genetic, prenatal influence
ototoxic medicine
trauma to the head
illnesses
aging process (presbycusis)
acoustic neuromas (tumors)

27
Q

most frequent form of SNHL that an OHC will encounter
damages hair cells as a result of prolonged exposure

A

noise induced hearing loss (NIHL)

28
Q

noise notch

A

3-6k Hz
most commonly located at 4k Hz

29
Q

treatment of SNHL

A

hearing aids
cochlear implants

30
Q

a person has a combination of conductive (outer/middle ear) and sensorineural hearing loss

A

mixed loss

31
Q

interference with the pathways from the brainstem to the auditory cortex

A

central hearing loss

32
Q

no medical or physical reason for the loss
conscious exaggeration

A

non-organic hearing loss
(pseudohypacusis/functional hearing loss)

33
Q

symptoms of non-organic hearing loss

A

booth loss
symmetrical hearing loss
no response to pure tones
restlessness
pressing on earphones
flinching

34
Q

purpose of lighted ear inspection (LEI)

A

rule out abnormalities
expedite care if needed

35
Q

when to inspect ears

A

prior to hearing test
when fitting HPDs

36
Q

equipment required for LEI

A

otoscope

37
Q

canal is open
TM/malleus is visible

A

normal findings

38
Q

TM not visible
infection
drainage
blood in canal

A

do not attempt hearing test

39
Q

foreign body
drainage/blood
cerumen blocking >25% of TM
deformities blocking >25% of TM

A

do not attempt HPD fitting

PHA BLK 5 (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions