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Neuroscience > Cerebellum > Flashcards

Cerebellum Flashcards

1
Q

cerebellum fxn

A

planning and fine tuning muscle contractions

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2
Q

cerebellum from….

A

metoncephalon

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3
Q

cerebellum parts

A

vermis (midline)
2 intermediate hemispheres
2 lateral hemispheres
flocculonodular lobe

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4
Q

vermis fxn

A

axial and proximal limb muscles

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5
Q

intermediate fxn

A

distal musculature

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6
Q

lateral fxn

A

motor planning

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7
Q

which parts influence CST

A

lateral and intrermediate

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8
Q

flocculonodular lobe fxn

A

balance and eye mvmts

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9
Q

input for vermis

A

spinal cord

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10
Q

input for intermediate

A

spinal cord

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11
Q

input for lateral

A

cerebral cortex

inferior olivary nuc

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12
Q

input for flocculonodular

A

vestibular nuclei (VIII)

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13
Q

tracts out

A

SCP

superior cerebellar peducle

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14
Q

tracts in

A

inferior cerebellar peduncle (ICP)

middle cerebellar peduncle (MCP)

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15
Q

cells that leave cerebellum (have influence)

A

purkinje cells

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16
Q

cells that leave cerebellum (have influence)

A

purkinje cells

17
Q

NTs in cerebellum

A

all cells use GABA except granulse cells (glutamate)

18
Q

cells in cerebellum

A 
purkinje
granule cells
stellate cells
basket cell
golgi cell
19
Q

fibers in cerebellum

A

climbing (from olivary nuc)

mossy (from spinal cord, pontine, vestibular)

20
Q

fibers in cerebellum

A

climbing (from olivary nuc)

mossy (from spinal cord, pontine, vestibular)

21
Q

deep nuclei

A

lateral: dentate

22
Q

cerebellar lesion (side)

A

ipsilateral

23
Q

cerebelllum lesion theme

A

tremor w/ mvmt

24
Q

vermis lesion sx

A

difficult ot maintain posture/balance

motor/cerebellar ataxic gait

25
Q

motor ataxia vs sensory ataxia

A

motor has Romberg sign

26
Q

Romberg sign

A

sway when close eyes (no more visual help)

27
Q

cerebellar hemisphere lesion

A

intention tremor w/ voluntary mvtmt
mostly fine @ rest
dysmetria
dysdiadochokinesis

28
Q

dysmetria

A

can’t stop mvmt at right place (measure)

use finger to nose test

29
Q

dysdiadochokinesis

A

can’t perform rapidly alternating mvmts

30
Q

flocculonodular lobe lesion sx

A

scanning dysarthria

abnormal conjugate gaze

31
Q

scanning dysarthria

A

break words into syllables

32
Q

abnormal conjugate gaze

A

trouble placing eyes where you want

33
Q

thiamine + Cb

A

thiamine def –> trouble for PCs in ant vermis for LL

–> motor ataxia but no signs in UL or cranial

Neuroscience (15 decks)

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