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SLP PRAXIS PREP > Ch 10 Audiology > Flashcards

Ch 10 Audiology Flashcards

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1
Q

most complex division of the ear

A

INNER EAR IS THE MOST?

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2
Q

inner ear receives mechanical vibration of sound through the movement of the ?

A

stapes footplate in oval window in the temporal bone

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3
Q

TWO MAJOR STRUCTURES OF INNER EAR

A

1) vestibular system (semicircular canals)

2) cochlea

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4
Q

each ear contains X hair cells

A

about 15,500 hair cells!

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5
Q

middle ear and nasopharynx are connected by the X

A

eustachian tube - maintains pressure within and outside the middle ear

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6
Q

basilar membrane BM

A

is the floor of cochlea duct

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7
Q

tip of BM is

A

thick, wide, lax

LOW FREQ SOUNDS

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8
Q

base of BM is

A

thin, narrow, stiffer!

HIGH FREQ SOUNDS

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9
Q

high f sounds are stimulated at the X of the basilar membrane

A

BASE!

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10
Q

low f sounds are stimulated at the X of the basilar membrane

A

TIPq

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11
Q

simple harmonic motion

A

a tone of single f that repeats itself

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12
Q

ear can respond to frequencies X to X

A

20- 20,000 HZ!

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13
Q

normal speech SPL

A

50 to 70 dB SPL is normal X

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14
Q

pain dB SPL

A

140 dB SPL causes X

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15
Q

human ear MOST sensitive to sounds x-x

A

1000-4000 HZ

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16
Q

20 week old fetus responds to sound

A

TRUE

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17
Q

babies turn their head toward sound sources by X

A

3-4 months old

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18
Q

infant can localize soft speech / normal hearing infants have better hearing than adults

A

by 6 months of age

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19
Q

AIR CONDUCTION

A

sound strikes tympanic membrane - causing ossicles to move and fluid movement in inner ear

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20
Q

BONE CONDUCTION

A

fluids of inner ear housed in skull

bone conducts sounds to inner air

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21
Q 
hearing loss levels
MILD
MOD
MOD SEVERE
SEVERE
PROFOUND
A 
up to 15 normal in kids
16-40 for kids 25-40 adults = MILD LOSS
41-55 = MOD
56-70= only understand shouted speech= MOD SEVERE
72-90= SEVERE
91+ is profound
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22
Q

Conductive loss

A

inner ear, AN, auditory brain centers normal
bone conduction normal - skull bones.
CHL is never profound because always some skull bone conduction happening….

23
Q

Conductive loss

A

issue with sound to ME or IE
inner ear, AN, auditory brain centers normal
bone conduction normal - skull bones.
CHL is never profound because always some skull bone conduction happening….

24
Q

otitis media creates X hearing loss

A

CHL= 20-35 dB HL

25
Q

type of otitis media that permanent damage to middle ear structures occurs

A

chronic otitis media!

26
Q

myringotomy- small incisions made to relieve pressure but in myringoplasty

A

perforated TM is repaired

27
Q

Carharts Notch ( assoc. with conductive hearing loss of ME or IE)

A

found in those with otosclerosis (spongy growth on stapes footplate so no movement of inner ear fluid).

reduced bone conduction sensitivity at 2000 HZ!**

28
Q

Carharts Notch ( assoc. with conductive hearing loss of ME)

A

found in those with otosclerosis (spongy growth on stapes footplate so no movement of inner ear fluid).

reduced bone conduction sensitivity at 2000 HZ!**

29
Q

SNHL

A

damage to hair cells of cochlea OR AN prevents brain retrieval of sound impulses

30
Q

bone and air conduction impaired in X hearing loss

A

SNHL

31
Q

STORCH = major HL causes in fetuses

A 
Syphilis
Toxoplasmosis = through placenta
Rubella = through placenta
Cytromegalovirus - herpes type virus  transmitted by close contact with infected kids
Herpes simplex- mother to fetus
32
Q

sloping of High freq SNHL

A

presbycusis

33
Q

central auditory processing

A

effectiveness efficiency with which the CNS uses auditory information

34
Q

difficulty understanding distorted speech

A

hallmark of issue with central auditory processing

35
Q

AN tumor hearing loss

A

unilateral high f hearing loss

36
Q

threshold

A

intensity level of tone heard at least 50% of time

37
Q

fall in range of human speech

A

100-8,000 HZ

38
Q

speech reception threshold SRT

A

lowest softest level of hearing at which person understands 50% of words presented. SPONDEE WORDS USED! equal stress on each syllable.

39
Q

people with SNHL can hear but not understand speech

A

TRUE in speech discrim tasks (Repeating words)

40
Q

impedance and admittance

A

impedance is the flow of energy

admittance is amount of energy that flows through system

41
Q

aud. brainstem responses ABR help record X

A

electrical activity in auditory nerve- helpful for brainstem diseases.

42
Q

hearing loss mild

A

16-40 dB

43
Q

mod hearing loss

A

41-55 dB

44
Q

mod- severe HL

A

56-65 dB

45
Q

severe HL

A

66-89 dB

46
Q

profound HL

A

90 + dB

47
Q

air bone gap indicates a X loss

A

conductive loss - 10 dB or more !

48
Q

postlingual deafness

A

HL after age of 5

49
Q

hearing aids deliver

A

amplified sound to the ear canal

50
Q

cochlear implant deliver

A

electrical impulses to the AN

51
Q

SNR

A

the difference in dB between stim of interest ( teachers voice) to the competing background noise

52
Q

cued speech is not sign language it differs because

A

8 signs for consonants and 4 for vowels - helps with homophenous sounds *(labial sounds look same but different)

53
Q

sign and speech used simultaneously

A

TOTAL COMMUNICATION

SLP PRAXIS PREP (3 decks)

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