Ear

Question 1

2 parts of auditory system

Answer 1

CENTRAL AUDITORY NERVOUS SYSTEM; PERIPHERAL AUDITORY NERVOUS SYSTEM

Question 2

From Cochlear nucleus to primary auditory cortex

Answer 2

Central ANS

Question 3

CN VIII

Answer 3

Auditory Nerve

Question 4

Auditory nerve is a ____ process

Answer 4

neural

Question 5

auditory nerve function

Answer 5

Transmits auditory and vestibular info from ear to brain

Question 6

collection of auditory nerve fibers

Answer 6

Spiral ganglion

Question 7

Peripheral ANS consists of

Answer 7

outer, middle, inner ear

Question 8

Outer ear is a _____ process

Answer 8

acoustic

Question 9

pinna function

Answer 9

sound localization

Question 10

External auditory meatus function

Answer 10

sound amplifier

Question 11

outer ear terminates at

Answer 11

tympanic membrane

Question 12

Cerumen function

Answer 12

traps and repels

Question 13

Outer ear function

Answer 13

resonator and amplifier

Question 14

Middle ear is a _____ process

Answer 14

mechanical

Question 15

3 layers of tympanic membrane

Answer 15

epidermal, fibrous, and membranous

Question 16

ossicular chain

Answer 16

malleus, incus, stapes

Question 17

2 middle ear muscles

Answer 17

Stapedius (CN VII)
Tensor tympani (CN V)

Question 18

Opens to equalize pressure

Answer 18

Eustachian Tube

Question 19

Middle ear function

Answer 19

conduction, protection

Question 20

Inner ear is a ______ process

Answer 20

Hydromechanical, Chemical

Question 21

2 subdivisions of cochlea

Answer 21

Osseous bony cochlea

Membranous cochlea

Question 22

Inner ear function

Answer 22

converts mechanical sound waves to electrical activity and neural impulses

Question 23

testing that measures the range and sensitivity of an individual’s hearing

Answer 23

Audiometry

Question 24

in air conduction testing, sounds go

Answer 24

through outer and middle ear

Question 25

presentation of pure tone testing

Answer 25

headphones, external

Question 26

When air conduction threshold in one ear exceeds bone conduction threshold in contralateral ear by 40dB HL or more

Answer 26

Air conduction masking

Question 27

sound through bone vibration direct to cochlea/inner ear

Answer 27

bone conduction testing

Question 28

bone conduction testing presentation

Answer 28

Bone oscillator behind ear instead of headphones

Question 29

use with Children who can't complete a normal hearing screening and/or if hearing loss is suspected in the brain/brain pathway

Answer 29

Auditory Brainstem Response (ABR)

Question 30

Auditory Brainstem Response (ABR) presentation

Answer 30

Electrodes: placed on head, record brain activity in response to sounds

Question 31

Intensity at which signal is barely detectible 50% of the time

Answer 31

threshold

Question 32

used to determine hair cell function

Answer 32

Otoacoustic emissions

Question 33

OAEs presentation

Answer 33

Earphone/probe inserted into ear (that makes sounds); OAEs record the response to that sound by vibration

Question 34

Dip in audiogram at 2,000 Hz due to stapes fixation

Answer 34

Carhart's notch

Question 35

Average of 500, 1000, and 2000 Hz thresholds

Answer 35

Pure tone average

Question 36

If sharply sloping loss, use ____ (average of 2 best thresholds at 500, 1000, and 2000 Hz)

Answer 36

fletcher average

Question 37

identifies the site of damage of the auditory system

Answer 37

Type

Question 38

3 types of HL

Answer 38

conductive, SNL, mixed

Question 39

outer and middle ear damage makes what loss

Answer 39

conductive

Question 40

conductive HL if air bone gap greater than

Answer 40

10 dB

Question 41

conductive HL if bone threshold

Answer 41

WNL

Question 42

inner ear and/or CN VIII makes what loss

Answer 42

SNL

Question 43

When Air + bone thresholds are equal, what type

Answer 43

SNL

Question 44

refers to the severity of the hearing loss

Answer 44

degree of HL

Question 45

the extent and pattern of loss across frequencies

Answer 45

Configuration

Question 46

AC thresholds within 20 dB of each other

Answer 46

Flat

Question 47

AC thresholds for low frequencies at least 20 dB poorer than for high frequencies

Answer 47

Rising

Question 48

AC thresholds for high frequencies at least 20 dB poorer than for low frequencies

Answer 48

Sloping

Question 49

HL only found in the low frequencies

Answer 49

Low frequency

Question 50

HL only found in the high frequencies

Answer 50

High frequency

Question 51

High frequency thresholds worsen by at least 20 dB per octave

Answer 51

Precipitous

Question 52

measurement of the eardrum immittance as a function of air pressure in the ear canal

Answer 52

Tympanometry

Question 53

Tympanometry procedure

Answer 53

A soft rubber tip (probe) is inserted into the ear canal, changing the pressure in the ear canal

Question 54

The admittance of the middle ear system (mobility); height of peak;

Answer 54

Static admittance

Question 55

The point at which air pressure is equal on either side of tympanic membrane

Answer 55

Tympanic peak pressure

Question 56

Describes the steepness and shape of the slope of the tympanogram, near the peak

Answer 56

Tympanic width

Question 57

Estimates the volume of the air medial to the probe

Answer 57

Canal volume

Question 58

normal tympanogram

Answer 58

Type A

Question 59

Shallow compliance tymp

Answer 59

Type As

Question 60

Type As tymp indicates:

Answer 60

Middle ear fluid, otosclerosis

Question 61

Deep compliance tymp

Answer 61

Type Ad

Question 62

Type Ad tymp indicates

Answer 62

Ossicular disarticulation; | TM scaring

Question 63

Flat tymp

Answer 63

Type B

Question 64

Type B tymp indicates

Answer 64

Middle ear effusion; Perforated TM; Cerumen occlusion

Question 65

negative pressure tymp

Answer 65

Type C

Question 66

Type C tymp indicates

Answer 66

Negative pressure TM or middle ear; | Eustachian tube dysfunction