cerebellum Flashcards

(33 cards)

1
Q

Where is the anatomical region of the vestibulocerebellum tract

A

Flocculonodular lobe

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2
Q

What is the main input to the vestibulocerebellar system

A

vestibular apparatus

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3
Q

what are the cerebellar deep nuclei for the vestibulocerebellar tract

A

fastigial

and lateral vestibular nucleus

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4
Q

what are the principal targets for the vestibulocerebellum

A

medial motor systems

axial motor neurons

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5
Q

what is the function of the vestibulocerebellum

A

balance, posture coordination of vestibular reflexes

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6
Q

What is the anatomical regions of the spinocerebellum

A

vermis

paravermal

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7
Q

what is the primary input to the vermal spinocerebellum

A

spinocerebellar tracts (axial and proximal limb)

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8
Q

what are the deep nuclei for the vermal spinocerebellum

A

fastigial

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9
Q

what are the main targets for the vermal spinocerebellum

A

medial motor systems

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10
Q

what is the function of the vernal spinocerebellum

A

axial, proximal motor control

adjustment of ongoing movements

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11
Q

What is the main input of the paranormal spinocerebellum

A

spinocerebellar tracts (distal limb)

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12
Q

what are the deep nuclei for the paravermal spinocerebellum

A

interposed

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13
Q

what are the targets for the paravermal spinocerebellum

A

lateral motor systems

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14
Q

what is the function of the paravermal spinocerebellum

A

distal motor control

adjustment of ongoing movements

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15
Q

what is the anatomical region of the cerebrocerebellum

A

lateral hemispheres

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16
Q

what is the main input to the cerebrocerebellum

A

motor cortices

17
Q

what is the deep nuclei for the cerebrocerebellum

18
Q

what are the targets for the cerebrocerebellum

A

red nucleus and motor cortices

19
Q

what is the function of the cerebrocerebellum

A

initiation, planning, timing of complex of motor movements

20
Q

Which cerebellar pathways cross midline

A

cerebrocerebellum twice

paravermal spinocerebellum twice

21
Q

What type of cells are in the molecular layer

A

the parallel fibers coming from granule cells

projection fibers from purkinje layer

22
Q

where do mossy fibers bring input from

A

pontine nuclei
vestibular nuclei
spinal cord
cerebellar Cx

23
Q

what cell types are in the purkinje layer

A

purkinje cells

projections from granule cells

24
Q

what is the synapse from the purkinje cells

A

inhibition onto the deep cerebellar nuclei

25
are mossy fibers excitatory or inhibitory
excitatory on granule cells Ach
26
are the granule cells excitatory or inhibitory
excitatory on purkinje cell projections | Glutamate
27
are the purkinje cells excitatory or inhibitory on deep cell nuclei
GABA inhibition
28
what are the output from cerebellar Cx
purkinje cells
29
what are the output from cerebellum
deep cell nuclei
30
Where do climbing fibers come from and where do they go
come from inferior olive | synapse on purkinje
31
are the climbing fibers excitatory or inhibitory
excitatory Asp
32
What is the main purpose of climbing fibers
motor learning
33
What is the path of the cerebrocerebellum
BA 4 and 6 travels down corticopontine fibers (anterior limb) to the pontine nuclei cross midline via middle cerebellar fibers to Cx cerebellum-->purkinje to dentate, cross midline via superior cerebellar peduncle to thalamus and the parvocell red nucleus->inferior olive to climbing fibers