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Neuro > m: eye movement > Flashcards

m: eye movement Flashcards

1
Q

Abducen number

A

CN VI

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2
Q

Trochlear number

A

CN IV

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3
Q

Oculomotor number

A

CN III

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4
Q

Lateral rectus controlled by

A

CNVI (abducens)

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5
Q

Superior oblique controlled by

A

CN IV (Trochlear)

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6
Q

what oculomotor control

A

everything else

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7
Q

where is oculomotor nuclei

A

midbrain

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8
Q

wheres trochlear nerves

A

rostal pons

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9
Q

wheres abducens nuclei

A

caudal pons

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10
Q

whats superior to inferior nuclei

A

oculomotor
trochlear
abudcens

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11
Q

how do occulomoto, track and Abd nuclei communicate

A

ascending MLF

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12
Q

MLF

A

coordinated eye movement

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13
Q

are the nuclei anterior ro posterior

A

psoteiro

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14
Q

vertical gaze center where

A

midbrain reticular formation

pretectal

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15
Q

horizontal gaze center

A

pons

PPRF

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16
Q

whats superior horizontal or veercial gazecenter

A

vert

17
Q

whats needed for horizontal gaze to right

A

same side CNVI or that side won’t go

18
Q

what does abudction of ipsilateral eye

A

abducens

19
Q

saccades

A

rapid eyes to different fixed points

20
Q

saccades styles

A

reflexive

volitional

21
Q

reflexive saccades

A

response to external cue

22
Q

volitional saccades

A

voluntary

23
Q

saccadic eye movement initiatives by

A

cortical or subcortical areas

24
Q

cortical ignition of saccades:

A

frontal eye fields

25
Q

subcortical inanition of saccades

A

superior colliculi

26
Q

reflexive saccade to right

A

opposite superior colliculus (to the side of gaze)

opposite horizontal gaze centre starts (to super colliuculU)

27
Q

what makes the descending MLF

A

medial lateral vestibulospinal tracts

28
Q

where does descnending MLF arise from

A

vestibular nuclei

29
Q

whats descending MLF influence

A

mm tone balance postrutre position head neck

30
Q

wheres vestibular nuclei

A

under abducens ones

31
Q

area that has highest visual acuity

A

fovea

32
Q

what VOR do

A

vestibule ocular relfex

stabilze image

33
Q

VOR

A

oppose side vest nuclei goes across to abducens who does its thing

34
Q

do eyes move with head

A

no opposite

Neuro (25 decks)

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