Chapter 10 - Audiology & Hearing Flashcards Preview

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Flashcards in Chapter 10 - Audiology & Hearing Deck (25)
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1
Q

Pinna

A

Funnels sound to ear canal and helps localize sound

2
Q

External auditory canal

A

Goes from Pinna to tympanic membrane

3
Q

Cerumen

A

Earwax

Cleans and lubricates ear canal

4
Q

Tympanic membrane

A

Vibrates in response to Sound pressure
Easy to damage
Better with lower frequency sounds

5
Q

Ossicular chain

A

3 bones - malleus, incus, stapes

Transmits sound with no distortions, amplifies incoming sounds

6
Q

Muscles of middle ear

A

Tensor tympani

Stapedius (smallest bone in body, stiffens occiular chair)

7
Q

Acoustic reflex

A

When muscles contract after a loud noise

Protective function

8
Q

Cochlea

A

Endolymph fluid

Organ of corti - hair cells that response to sound vibrations and translate them into electrical energy

9
Q

Ear responds to sounds between

A

20-20000 hz

Most sensitive to 100-4000 hz

10
Q

Norma speech varies between

A

50-69 dB

11
Q

Conductive hearing loss

A
Normal bone conduction 
Middle and inner ear compromised 
Some residual hearing
Speak softly
Loss of 20-35 dB if have from otitis media
12
Q

Sensorineural hearing loss

A

Permanent change to hair cells of cochlea or the auditory nerve

13
Q

Ménière’s disease

A

Fluctuating hearing loss because of excessive endolymph fluid pressure
Associated with vertigo and tinnitus

14
Q

Retrocochlear disease

A

Damage to nerve fibers along auditory pathway to cortex

Unilateral high frequency hearing loss

15
Q

Mild hearing loss

A

16-40

16
Q

Moderate hearing loss

A

41-55

17
Q

Moderately-severe

A

55-65

18
Q

Severe hearing loss

A

66-89

19
Q

Profound hearing loss

A

90+

20
Q

Common speech impairments of hearing loss

A
Distortions of fricatives and stops
Omissions of initial and final consonants 
Substitute voiced for voiceless 
Omission of /s/ in all positions 
Increased vowel duration
21
Q

Language impairments with hearing loss

A
Impaired syntax
Reading comprehension 
Rate
Pitch
Poor stress patterns
22
Q

Cued speech

A

Manual cues that represent speech sounds
8 signs for consonants
4 signs for vowels

23
Q

Aural/oral method

A

Using amplification methods to maximize residual hearing along with some oral communication

24
Q

Manual approach

A

Nonverbal communication

Signing or finger spelling

25
Q

Total communication

A

Verbal and nonverbal language