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Neuro > vestibular system > Flashcards

vestibular system Flashcards

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

A

branches of CN VIII

vestibulocochlear nerve

23
Q

branches of CN BIII

A

vestibular and auditory

24
Q

vestibulo parts do what

A

balance

25
Q

cochlear parts do what

A

audition

26
Q

semicircular ducts detect what

A

head rotation/ acceleration

27
Q

3 semicircular ducts

A

anterior horizontal posterior

28
Q

ampulla

A

end of semicircular canals

contain vestibular organs

29
Q

cupula

A

gelatinous mass

has hair cells

30
Q

mechanical displacement of hair cells does what

A

trigger AP

31
Q

head rates where bony canal and endolymph going

A

bony canal with

endolymph opposite

32
Q

left anterior canal works with

A

right posterior canal

33
Q

left posterior canal works with

A

right anterior canal

34
Q

left horizontal canal works with

A

right horizontal canal

35
Q

left head turn does what

A

left horizontal duct

right horizontal duct

36
Q

left head turns what happened on right n left

A

left excited, stereo to kino

right inhibited
kin to stereo

37
Q

nodding yes is which ducts

sagittal

A

anterior and posterior duct

38
Q

nodding no is which duct

axial

A

horizontal

39
Q

maybe

cornonla is which duct

A

anterior posterior

40
Q

otolith organs

A

utricle saccule

41
Q

utricle and saccule contact what

A

endolymph

42
Q

utricle and saccule do what

A

linear head accerlation

static head tilts

43
Q

utricle or saccule bigger

A

utricle

44
Q

horizontal linear movement

A

forward and backward acceleration n

45
Q

utricle contains what

A

macula of utricle

membrane of utricle

46
Q

utricle does what movement

A

horizontal

47
Q

saccule does what movement

A

vertical

48
Q

parts of saccule

A

macula of saccule

membrane of saccule

49
Q

membrane doe what macular do what

A

membranes orientation

maccula sensory

50
Q

striola

A

hair cells with opposition orientation line up

51
Q

stroll embedded where

A

gelatinous otolithic membrane

52
Q

linear head movement do what

A

activate hair cells

displace otoliths

53
Q

otoliths

A

calcium carbonate crystals

54
Q

5 vestibular organs

A 
semicircular ducts (ant, post, horizontal)
otolith organs (utricle, saccule)

Neuro (25 decks)

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