Brainscape's Knowledge GenomeTM

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


See full index

Megan Ear Anatomy > Inner Ear > Flashcards

Inner Ear Flashcards

1
Q

Movement of the stereocilia of the IHC results in a flow of ____ ions into the stereocilia, that originate within the_____ fluid.

A

POTASSIUM, ENDOLYMPH

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

OHC motility causes an increase in the intensity of sound at the cochlea, therefore OHCs act as a ________ _________

A

COCHLEAR AMPLIFIER

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

If you’re in a an airplane that is taking off and the air pressure in the cabin drops, what happens to your eardrum?

A

POSITIVE PRESSURE, TM PUSHES OUTWARD

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

Name the two main purposes of the inner ear system.

A

TRANSDUCE MECHANICAL TO ELECTROCHEMICAL, BALANCE SYSTEM

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

Can you slice open the skill and take out the inner ear system as one piece? Why or why not?

A

NO. PETROUS PORTION OF TEMPORAL BONE IS A SPACE.

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

What two major cranial nerves does the internal auditory canal carry?

A

ACOUSTIC AND FACIAL

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

What membrane separates the scala vestibuli from the scala media?

A

REISSNER’S MEMBRANE

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

Name the three fluids in the inner ear?

A

ENDOLYMPH, PERILYMPH, CORTILYMPH

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

WHich fluid is high in Potassium (K+) and low in Sodium (Na+)?

A

ENDOLYMPH

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

The spiral lamina is _____ at the base and ______ at the apex.

A

WIDE, NARROW

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

Which type of hair cell in the cochlea is surrounded from the base to apex by supportive cells?

A

INNER HAIR CELLS

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

This type of supportive cell forms the substance of the tectorial membrane:

A

BORDER CELLS OF HELD

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

What are the two functions of the phalangeal process?

A

FORM RETICULAR LAMINAE, SUPPORT HAIR CELLS

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

In the cochlea there are ____ rows of IHCs, and _____ rows of OHCs.

A

ONE, THREE

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

The utricle and saccule are responsible for interpreting _____ acceleration.

A

LINEAR

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

The bodys ability to maintain balance depends on information from three body systems. What are they?

A

VISUAL, SOMATOSENSORY, VESTIBULAR

17
Q

When the head turns right, the fluid in the horizontal semicircular canal lags behind the movement of the head due to:

A

INERTIA

18
Q

Narrow ducts projecting from the utricle and saccule join together to form the______

A

ENDOLYMPHATIC

19
Q

Tones of low frequency with longer wavelengths show maximum displacement of the basilar membrane near the _____ end of the cochlea.

A

APEX

20
Q

T or F: Low frequency sounds activate the high frequency end of the basilar membrane, in addition to their frequency specific points.

A

TRUE

21
Q

The OHC motility that results in the increase in the IHC response is called the______

A

COCHLEAER AMPLIFIER

22
Q

The responsiveness of auditory neurons to sounds at specific frequencies and not for sounds at other frequencies is called:______

A

FREQUENCY SELECTIVITY

23
Q

A collection of nerve fibers that enter the modiolus on their way to the IAC are called:___

A

SPIRAL GANGLIA

24
Q

The inner ear contains two labyrinth systems, what are they called?

A

OSSEOUS, MEMBRANOUS

25
Q

How many turns does the cochlea make from its base to its apex?

A

2 3/4

26
Q

The bony shelf that projects from the modiolus is called?

A

SPIRAL LAMINA

27
Q

What membrane separates the scala tympani from the scala media?

A

BASILAR MEMBRANE

28
Q

Where are the three fluids of the inner ear located?

A

ENDOLYMPH: INSIDE MEMBRANOUS LABYRINTH
PERILYMPH: BETWEEN BONY AND MEMBRANOUS
CORTILYMPH: INSIDE ORGAN OF CORTI

29
Q

T/F the fluids in the middle ear are compressible?

A

FALSE

30
Q

The basilar membrane is thinnest and stiffest where?

A

BASE

31
Q

The cochlea is the thickest and most flaccid where?

A

APEX

32
Q

If you slice a cochlea in half, it will have three channels. What are their names?

A

SCALA VESTIBULI
SCALA MEDIA
SCALA TYMPANI

33
Q

The stereocilia of the hair cells in the cochlea are attached to the hair cells at the?

A

CUTICULAR PLATE

34
Q

Each macula consists of a gelatinous membrane called?

A

OTOLITHIC MEMBRANE

35
Q

Outer hair cell motility improves our hearing sensitivity by about ( ) to ( )dB, and contributes to our ability to precisely distinguish among specific ( ).

A

40,
50,
FREQUENCIES

36
Q

Each ampulla contain a sensory organ called the ______

A

CRISTA

37
Q

When coding the frequency of sound, both place and temporal coding mainly occur is between what frequencies.

A

1000-5000 HZ

38
Q

Each Crista consists of a gelatinous mass called the ___________.

A

CUPULA

Megan Ear Anatomy (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions