The Physiology of Hearing and Balance Flashcards

1
Q

describe the pathway of hearing

A
Ear canal			
tympanic membrane 			
ossicles
Cochlea			
cochlear nerve				
auditory cortex
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

give the two types of hearing loss?

A

Conductive

Sensorineural

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

what is conductive hearing loss?

A

occurs when there is a problem conducting sound waves through outer ear, tympanic membrane, or middle ear

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

what is sensorineural hearing loss?

A

root cause lies in sensory organ (cochlea and associated structures) or the neural part (cranial nerve VIII)

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

what part does the cochlea play in hearing?

A

Hair cells within the Organ of Corti produce electrical activity (endolymph, perilymph)

This activity becomes a neural impulse and travels to the brain via the cochlear nerve VIII

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

at what threshold is there no sound?

A

0 db SPL

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

at what threshold do you feel pain via sound?

A

130 db SPL

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

Conductive losses tend to predominate in which level of frequencies?

A

low

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

Sensorineural losses tend to predominate in which level of frequencies?

A

high

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

what does an Audiometry test measure?

A

tests your ability to hear amplitude or intensity of sound and frequency
(subjective)

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

what does a Tympanometry test measure?

A

Measure of tympanic membrane compliance involving middle ear and ear canal pressure
(canal pressure should equal middle ear pressure)

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

what is the Tympanometry test useful for detecting?

A

Eustachian tube dysfunction

Middle ear effusion (glue-ear)

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

after what age, will children be unable to speak when born deaf, even if the hearing is restored?

A

approx age of 4

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