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vestibular system Flashcards

(54 cards)

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1
Q

vestibular system does what

A

equilibrium

balance

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2
Q

sensory organ of vestibular are where

A

bony labyrinth

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3
Q

bony labyrinth found where

A

inner ear

temporal bone

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4
Q

whats inside bony labyrinth

A

ducts and sacs

membranous labyrinth

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5
Q

whats in membranous labyrinth

A

audition

vestibular sense

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6
Q

parts of membranous labyrinth

A

semicircular dcuts
otolith organs
cochlea

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7
Q

semicircular, otolotih and cochlea which does audition

A

cochlea

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8
Q

membranous labyrinth filled with

A

endolymph

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9
Q

membranous labyrinth surrounded by

A

perliympth

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10
Q

perilymph highlights what on diagram and end does what

A

cochlea

semicircles

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11
Q

membranous labyrinth contains what

A

sensory organs

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12
Q

perilymph

A

between bone and membranous labyrinth

high na low k

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13
Q

endolymph

A

high k low n

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14
Q

why high K in endolymph

A

hair cells

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15
Q

hair cells

A

mechanical energy

steroecilia and kinocilium

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16
Q

whats taller stereo or kinocilium

A

kino

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17
Q

what links stereo and kino

A

k channels

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18
Q

depolarizing current in hair cells triggered by

A

K

key factor

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19
Q

sensory transaction at rest

A

parrell
baseline k /ca influx
baseline glutamate release

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20
Q

sensory transduction during depolarization

A 
stereo to kino
k open
k influx
depolraiton 
ca open
c influx 
excitatory signal
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21
Q

hyper polarization transaction what happens

A

kino to stereo
k close
little k/ca influx
little glutaemate

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22
Q

the five vestibular organs send electrical impulses to what

Study These Flashcards
A

branches of CN VIII

vestibulocochlear nerve

23
Q

branches of CN BIII

Study These Flashcards
A

vestibular and auditory

24
Q

vestibulo parts do what

25
cochlear parts do what
audition
26
semicircular ducts detect what
head rotation/ acceleration
27
3 semicircular ducts
anterior horizontal posterior
28
ampulla
end of semicircular canals | contain vestibular organs
29
cupula
gelatinous mass | has hair cells
30
mechanical displacement of hair cells does what
trigger AP
31
head rates where bony canal and endolymph going
bony canal with | endolymph opposite
32
left anterior canal works with
right posterior canal
33
left posterior canal works with
right anterior canal
34
left horizontal canal works with
right horizontal canal
35
left head turn does what
left horizontal duct | right horizontal duct
36
left head turns what happened on right n left
left excited, stereo to kino right inhibited kin to stereo
37
nodding yes is which ducts sagittal
anterior and posterior duct
38
nodding no is which duct axial
horizontal
39
maybe cornonla is which duct
anterior posterior
40
otolith organs
utricle saccule
41
utricle and saccule contact what
endolymph
42
utricle and saccule do what
linear head accerlation static head tilts
43
utricle or saccule bigger
utricle
44
horizontal linear movement
forward and backward acceleration n
45
utricle contains what
macula of utricle | membrane of utricle
46
utricle does what movement
horizontal
47
saccule does what movement
vertical
48
parts of saccule
macula of saccule | membrane of saccule
49
membrane doe what macular do what
membranes orientation maccula sensory
50
striola
hair cells with opposition orientation line up
51
stroll embedded where
gelatinous otolithic membrane
52
linear head movement do what
activate hair cells | displace otoliths
53
otoliths
calcium carbonate crystals
54
5 vestibular organs
``` semicircular ducts (ant, post, horizontal) otolith organs (utricle, saccule) ```

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