Brainscape's Knowledge GenomeTM

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


See full index

Neuro Week 3 > Vestibular Physio > Flashcards

Vestibular Physio Flashcards

1
Q

what does the vestibular apparatus consist of?

A

utircle
saccule
semicircular canals

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

what is sensory cell of vestibular apparatus?

A

hair cells

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

what are stereocilia/kinocilia surrounded by is vestibular area?

A

endolypmph so high K+ again

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

the utricle is in charge of sensing what motion?

A

linear acceleration in horizontal plane

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

the saccule is in charge of sensing what motion?

A

linear acceleration in vertical plane

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

what is just above the hair cells and surrounds them in vestibular apparatus?

A

gelatinous layer

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

what is in the gelatinous layer of the vestibular apparatus?

A

calcium carbonate crystals

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

explain the role crystals play in sensing movement in vestibular apparatus

A

as head moves the crystals are pulled by gravity and move the stereocilia in opposite direction

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

what is at the base of each semicircular canal?

A

the ampulla

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

what does the ampulla have in it?

A

hair cells with stereocilia

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

how do semicircular canals sense movement?

A

fluid in them pushes against the stereocilia in the ampulla as the head moves and that leads to depolarization or hyperpolarization

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

how many semicricular canals are there?

A

3…all in different planes

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

do you need input from one or both sides to understand what is happening in vestibular sense?

A

BOTH

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

where does balance info go after the 8th cranial nerve?

A

to the vestibular nuclear group

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

what are the two places that vestibular nerve axons can synapse?

A

vestibular nuclei or the cerebellum through the inferior cerebellar peduncle

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

axons of the vestibuar nuclei enter the cerbellum via what?

A

inferior cerebellar peduncle

17
Q

how do vestibular nuclei help control eye movements?

A

they project to the MLF

18
Q

what is linked through the MLF? hint 2 cranial nerves

A

occulomotor and abducens nerves

19
Q

the abducens nucleus sends signals to what two spots?

A

abducens nerve and occulomotor nucleus

20
Q

how does the abducens nucleus send info to occulomotor nerve?

A

through the MLF

21
Q

what two things send signals to the abducens nucleus?

A

PPRF and vestibular nuclei

22
Q

what is the PPRF?

A

parapontine reticular formation

23
Q

what is the voluntary control of abducen/occulomotor eye horizontal movement?

A

frontal eye fields….to PPRF

24
Q

what is the involuntary control of abducen/occulomotor eye horizontal movement?

A

vestibular nuclei to the PPRF

25
Q

what does the Dolls eye maneuver test?

A

CN3 and 6
PPRF
MLF

Neuro Week 3 (13 decks)

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