Ch 10 Audiology

Question 1

most complex division of the ear

Answer 1

INNER EAR IS THE MOST?

Question 2

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

Answer 2

stapes footplate in oval window in the temporal bone

Question 3

TWO MAJOR STRUCTURES OF INNER EAR

Answer 3

1) vestibular system (semicircular canals)

2) cochlea

Question 4

each ear contains X hair cells

Answer 4

about 15,500 hair cells!

Question 5

middle ear and nasopharynx are connected by the X

Answer 5

eustachian tube - maintains pressure within and outside the middle ear

Question 6

basilar membrane BM

Answer 6

is the floor of cochlea duct

Question 7

tip of BM is

Answer 7

thick, wide, lax

LOW FREQ SOUNDS

Question 8

base of BM is

Answer 8

thin, narrow, stiffer!

HIGH FREQ SOUNDS

Question 9

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

Answer 9

BASE!

Question 10

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

Answer 10

TIPq

Question 11

simple harmonic motion

Answer 11

a tone of single f that repeats itself

Question 12

ear can respond to frequencies X to X

Answer 12

20- 20,000 HZ!

Question 13

normal speech SPL

Answer 13

50 to 70 dB SPL is normal X

Question 14

pain dB SPL

Answer 14

140 dB SPL causes X

Question 15

human ear MOST sensitive to sounds x-x

Answer 15

1000-4000 HZ

Question 16

20 week old fetus responds to sound

Answer 16

TRUE

Question 17

babies turn their head toward sound sources by X

Answer 17

3-4 months old

Question 18

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

Answer 18

by 6 months of age

Question 19

AIR CONDUCTION

Answer 19

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

Question 20

BONE CONDUCTION

Answer 20

fluids of inner ear housed in skull

bone conducts sounds to inner air

Question 21

hearing loss levels
MILD
MOD
MOD SEVERE
SEVERE
PROFOUND

Answer 21

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

Question 22

Conductive loss

Answer 22

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

Question 23

Conductive loss

Answer 23

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….

Question 24

otitis media creates X hearing loss

Answer 24

CHL= 20-35 dB HL

Question 25

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

Answer 25

chronic otitis media!

Question 26

myringotomy- small incisions made to relieve pressure but in myringoplasty

Answer 26

perforated TM is repaired

Question 27

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

Answer 27

found in those with otosclerosis (spongy growth on stapes footplate so no movement of inner ear fluid). reduced bone conduction sensitivity at 2000 HZ!**

Question 28

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

Answer 28

found in those with otosclerosis (spongy growth on stapes footplate so no movement of inner ear fluid). reduced bone conduction sensitivity at 2000 HZ!**

Question 29

SNHL

Answer 29

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

Question 30

bone and air conduction impaired in X hearing loss

Answer 30

SNHL

Question 31

STORCH = major HL causes in fetuses

Answer 31

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

Question 32

sloping of High freq SNHL

Answer 32

presbycusis

Question 33

central auditory processing

Answer 33

effectiveness efficiency with which the CNS uses auditory information

Question 34

difficulty understanding distorted speech

Answer 34

hallmark of issue with central auditory processing

Question 35

AN tumor hearing loss

Answer 35

unilateral high f hearing loss

Question 36

threshold

Answer 36

intensity level of tone heard at least 50% of time

Question 37

fall in range of human speech

Answer 37

100-8,000 HZ

Question 38

speech reception threshold SRT

Answer 38

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

Question 39

people with SNHL can hear but not understand speech

Answer 39

TRUE in speech discrim tasks (Repeating words)

Question 40

impedance and admittance

Answer 40

impedance is the flow of energy | admittance is amount of energy that flows through system

Question 41

aud. brainstem responses ABR help record X

Answer 41

electrical activity in auditory nerve- helpful for brainstem diseases.

Question 42

hearing loss mild

Answer 42

16-40 dB

Question 43

mod hearing loss

Answer 43

41-55 dB

Question 44

mod- severe HL

Answer 44

56-65 dB

Question 45

severe HL

Answer 45

66-89 dB

Question 46

profound HL

Answer 46

90 + dB

Question 47

air bone gap indicates a X loss

Answer 47

conductive loss - 10 dB or more !

Question 48

postlingual deafness

Answer 48

HL after age of 5

Question 49

hearing aids deliver

Answer 49

amplified sound to the ear canal

Question 50

cochlear implant deliver

Answer 50

electrical impulses to the AN

Question 51

SNR

Answer 51

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

Question 52

cued speech is not sign language it differs because

Answer 52

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

Question 53

sign and speech used simultaneously

Answer 53

TOTAL COMMUNICATION