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Neuro > central vestibular projections > Flashcards

central vestibular projections Flashcards

1
Q

how is vestibular info to CNS

A

vestibulocochlear nerve

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2
Q

central processes travelling in vestibular branch enter where

A

brainstem

pontomedullary junction

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3
Q

vestibular nuclei complex

A

receive from vestibular apparatus

major reflex pathways

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4
Q

vestibular nuclie complex divided into what

A

lateral vand medial vestibular nuclie

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5
Q

wheres vestibular uncle complex located

A

posterior tegmenjtum

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6
Q

lateral vestibular nuclei do what

A

process info from otolith (linear)

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7
Q

medial vestibular nuclei do what

A

process info semicircular (rotational)

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8
Q

vestibular nuclei receive afferent or efferent

A

afferent

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9
Q

why multimodal

A

info from vestibular, cerebellar and visual/somatosensory

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10
Q

T/F vestibular nuclei connect with cerebellar input

A

true

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11
Q

T/F vestibular nuclear on receive info from cerebellum

A

false they give to

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12
Q

vestibulocerebellum

A

parts where cerebellum and vestibular nuclei interconnected

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13
Q

fastigial nuclei

A

vestibular cervical reflex
vestibular spinal reflex
postural stability

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14
Q

flocculus

A

compensentory eye movement

vestibulo ocular reflex

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15
Q

nodulus

A

receive input from vestibular nuclei complex

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16
Q

oculomotor vermis

A

coordinates vestibular, oculomotor and cortical input

17
Q

what contributes to proprioception of personal space

A

vestibular nuclei to cortex

18
Q

vestibular cortical target
where
do what

A

somatosensory area

receive visual / somatosensory info

19
Q

T/F there is single cortical area for input from vestibular

A

no

20
Q

projection from vestibular nuclei reach the vestibular cortical target via

A

thalamus

21
Q

steps in cortical projections

A

vestibular nuclei (brainstem)

Thalamus (Cross)

Somatosensory (primary and secondary areas)

22
Q

which does conscious perception

cortex or Sc

A

cortex

23
Q

which does vestibular reflex

cortex or Sc

A

Sc

24
Q

vestibular nuclei 3 major reflex

A

vestibulo ocular reflex
vestibucervical reflex
vestibulo spinal

25
Q

vestibulo ocular reflex

A

head moves, you look forward

adjust eye movement to head, stabilizes image

26
Q

vestibulocervical reflex

A

postural adjustments of head / neck in response to movement

27
Q

vestibulospinal reflex

A

postural stability of body with input to mm

28
Q

left head turn

what happening in vestibulo ocular reflex

A
  1. semicircular duct detect
  2. afferents project to medial vestibular nuclie
  3. input to contralateral abducens
  4. innervate ipsilateral mm via CNv1

4b. innervate contralateral mm (CNIII)

29
Q

vestibular could reflex rotational?

A

yes

30
Q

vestibulocervical reflex rotational?

A

yes

31
Q

vestibulocerival reflex through descending medial or longitundal fascicles

A

medial

32
Q

steps vestibulocervical reflex

A
  1. semicircular detect
  2. project to medial vestibular nuclei
  3. travel I medial longitudinal facsciulaus
  4. input to cervical levels, head / mm movement
33
Q

vestibulospinal rotiaonal?

A

rotational and linear

34
Q

vestibuilospinal reflex detected by

A

semi and otolith

35
Q

vestibulospinal medial or lateral vestibulopsinal tract

A

both

36
Q

vestibulospinal reflex

A

rotational steps
(same as vestibulocervical)

linear steps

37
Q

steps in linear acceleration vestibulospinal reflex

A
  1. otolith detect
  2. project to lateral vestibular nuclei
  3. travel in lateral vestibulospinal tract
  4. input all levels of SC for mm
38
Q

how to detect change in balance reach CNS

A

vestibular ganglion
(semicircular and otolith)

to brainstem (cortex n SC)

to cerebellum

Neuro (25 decks)

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