Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Introduction to Audiology > Chapter 10: The Inner Ear > Flashcards

Chapter 10: The Inner Ear Flashcards

1
Q

Inner Ear Functions

A

-Transduce mechanical energy from middle ear into energy that can be understood by the brain
-Maintain balance

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

Equilibrium

A

-Depends on inputs from inner ear (vestibular), visual, and proprioceptive systems

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

Otolith organs

A

Utricle and Saccule

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

Utricle

A

horizontal, linear acceleration

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

Saccule

A

vertical acceleration

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

Semicircular Canals

A

Rotational or angular movement

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

Ampullae

A

Receptor site for rotational/angular movement

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

How does the Vestibular System work?

A

When the head is moved, fluids tend to lag behind because of their inertia. This sets the fluids into motion resulting in stimulation of the vestibular system

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

Vertigo

A

True sensation of spinning

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

Nystagmus

A

Rapid rocking eye movement. Occurs with vertigo

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

Scala Vestibuli

A

-Upper portion of cochlea
-Starts at the oval window

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

Scala Media (Cochlear Duct)

A

-Middle portion of cochlea

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

Scala Tympani

A

-Bottom portion of cochlea
-Starts at the round window

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Helicotrema

A

-Place where the scala vestibuli and scala tympani connect at the apex of the cochlea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Endolymph

A

-Found within the scala media, utricle, saccule, and semicircular canals
-High in potassium and low in sodium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Perilymph

A

-Found within the scala vestibuli and scala tympani
-High in sodium and low in potassium

17
Q

Organ of Corti

A

-End organ of hearing
-Contains the sensory hair cells

18
Q

Basilar Membrane

A

-Contains the auditory hair cells in its fibrous layer that in tonotopically organized
-Moves in response to fluid wave

19
Q

Tectorial Membrane

A

-Hair cells are held between the basilar and tectorial membrane

20
Q

Reissner’s Membrane

A

Separates the scala media from the scala vestibuli

21
Q

Spiral Ligament

A

-Supports the scala media

22
Q

Stria Vascularis

A

-Produces endolymph
-Supplies oxygen and nutrients to the cochlea

23
Q

Modiolus

A

-Central core of the cochlea
-Where blood and nerve supply enter the cochlea

24
Q

Low Frequency Tones

A

-Longer wavelengths and create maximum displacement at the apex

25
Q

High Frequency Tones

A

-Shorter wavelengths and create maximum displacement at basal end

26
Q

Hair Cell Transduction

A

-When the basilar membrane moves up and down in response to the fluid wave, the hair cells twist/shear

27
Q

Outer Hair Cells

A

Amplify sound

28
Q

Inner Hair Cells

A

Better frequency discrimination ability

29
Q

Spontaneous OAE

A

-Recorded without auditory stimulation

30
Q

Transient-Evoked OAE

A

-Uses a short click
-Screening approach

31
Q

Distortion - Product OAE

A

-Frequency Specific
-More diagnostic

32
Q

Causes of Perinatal Hearing Loss

A

-Anoxia
-Exposure to virus from infected mother
-Trauma to fetal head

33
Q

Sudden Idiopathic Sensory/Neural Hearing Loss (SISNHL)

A

-Unilateral hearing loss that develops suddenly
-Medical emergency

34
Q

Meniere’s Disease

A

-Suden attacks of vertigo, roaring tinnitus, vomiting, unilateral hearing loss, aural fullness
-Over secretion of endolymph

35
Q

Semicircular Canal Dehiscence Syndrome (SCDS)

A

-More common in superior semicircular canal
-Due to weakening of the bone that covers the semicircular canals

36
Q

Autoimmune Inner-Ear Disease (AIED)

A

-Results in bilateral, fluctuating, progressive sensory hearing loss

37
Q

Presbycusis

A

Hearing loss due to aging

38
Q

Noise Induced Hearing Loss

A

-Sloping Audiogram
-May occur due to work or recreational noise exposure

39
Q

Ototoxic Hearing Loss

A

-Hearing loss caused by exposure to drugs or chemicals that are toxic to the inner ear

Introduction to Audiology (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions