Brainscape's Knowledge GenomeTM

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


See full index

5. Neuro > Auditory Physiology > Flashcards

Auditory Physiology Flashcards

1
Q

What is the outer ear for?

A

Helps you collect sound

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

What is the middle ear for?

A

Transmission of sound

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

What is the inner ear for?

A

The conversion of sound into neural impulses

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

What is the transmission of sound thru the external part of the ear?

A

Enters via pinna (auricle) and into the external auditory canal

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

Then from the canal, where do vibrations reach?

A

The tympanic membrane

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

What bone Is the middle ear?

A

Temporal bone of skull

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

Sensation to the middle ear is provided by which nerve?

A

Glossopharngeal nerve (CN9)

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

What does vibrations of the tympanic membrane cause?

A

The ossicles to vibrate

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

What are the ossicles?

A 
3 bones
Malleus
Incus
Stapes
MIS
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Ossicles
What bones are they?
What do they have between them?

A

Smallest bones of the body

Synovial joints between them

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

What do the ossicles then hit on?

A

Transfer the vibrations to the oval window of the scala vestibuli

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

The amount of energy transmitted to the inner ear can be lessened by contraction of what 2 small muscles?
What are they innervate by?
What do they connect to?

A

Tensor tympani
Mandibular division of trigeminal
Attaches to malleus

Stapedius
Facial nerve (CN7)
Stapes

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

These muscles protect the inner ear from….

But can’t protect it from….

A

Continuous loud noise

Sudden intermittent loud sounds

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

What is the inner ear called?

A

The cochlea (organ of hearing)

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

What is the cochlear duct filled with?

A

Endolymph

Extracellular fluid with high conc of K+ & low Na+

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

What is scala vestibuli and tympani filled with?

A

Perilymph

Similar to CSF

17
Q

When waves of pressure get to the oval window of the scala vestibuli, where does it go?

A

Scala vestibuli—-> helicotrema —-> scala tympani —-> round window (relieves pressure)

18
Q

Where is the Basilar membrane?

A

Above scala tympani and below cochlear duct

19
Q

The base of the Basilar membrane is….. thus sensitive to …..

A

Narrow and stiff

High frequency’s

20
Q

The apex of the Basilar membrane is….. thus sensitive to …..

A

Wider and less stiff

Low frequency’s

21
Q

What happens to the stereocilia on basilar membrane?

A

Bent against stationary tectorial membrane

22
Q

What neurotransmitter is released by the hair cells?

A

Glutamate onto afferent neurones

23
Q

This results in APs in the neurons, the axons of which join to form the….

A

Cochlear branch of the vestibulocochlear nerve

24
Q

What is the path of the vestibulocochlear nerve, the cochlear branch?

A 
Cochlear nuclei
Superior olivary nucleus
Inferior colliculus
Medial geniculate body 
Primary auditory cortex, in wernickes area
25
Q

Where is the primary auditory cortex found and why?

A

Temporal lobe
Surrounded by wernickes area
Auditory info is interpreted and understood here

26
Q

What is a way to remember the pathway?

A

I’M Auditory
Inferior colliculus
Medial geniculate body
Auditory info

27
Q

Then what must the pathway be for vision?

A

Superior colliculus

Lateral geniculate body

28
Q

What does the Corda tympani do and run through?

A

Branch of the CN5
Conveys taste info from tongue
Runs through middle ear to carry taste messages to brain

29
Q

Inflammation of the facial nerve can lead to pain where?

A

Behind the ear

Also paralysis of facial muscles and failure to close eye

30
Q

What is wernickes area important for?

What happens if wernickes area is damaged?

A

Processing and understanding language in the brain

Not able to understand questions and speech will be incomprehensible

31
Q

What does the vestibular system comprise of?

A

3 semicircular canals filled with endolymph
2 sac like swellings, the utricle and saccule (otolithic organs)
Hair cells

32
Q

What do the otolithic organs provide info about?

A

Linear acceleration

Changed in head position in relation to gravity

33
Q

What nerve is supplied by the vestibular system?

A

Vestibular branch of the vestibulocochlear nerve (CN8)

34
Q

What is vestibular info used for?

A

Control of eye muscles
Reflex mechanisms of maintaining upright posture and balance
Conscious awareness of the position and acceleration of the body - proprioception

5. Neuro (16 decks)

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