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Flashcards in cerebellum Deck (13)
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0
Q

intermediate

A

distal musculature
ongoing motor excution
input: contracting muscle, spinal cord

1
Q

vermis

A

axial&proximal musculature of the limb
ongoing motor excution, balance truncal coordination
input: contracting muscle, spinal cord
INJURED:Romberg sign: difficulty maintaining posture, gait or balance, loss balance with eye open(DD dorsal column: fall with eyes close)
Truncal ataxia, dysarthria

2
Q

lateral

A

motor planning
planning and coordination, voluntary movement of extremities
input from cerebral cortex & inferior olivary nucleus
INJURIED: fall toward injured side(ipsilateral), tremor with intended movement without paralysis or paresis ipsilateral

3
Q

flocculonodular lobe

A

control balance & eye movement, balance

input: lat. vestibular nucleus–> vestibulocerebellar track

4
Q

molecular layer

A
outer most
basket: GABA-->DC
stella cell:GABA-->DC
parallel fibers (axons of granule cell)
Dendritic tree(purkinje cell&Golgi II)
5
Q

purkinje layer

A
middle
largest neuron
axon will leave the cortex, inhibiting,efferent pathway
deep cellular nuclei-->(GABA)inhibitory
climbing fibers
6
Q

granule cell layer

A

inner most, intinsic neuron
synape with purkinje
Golgi: GABA–>granule cell
Form glomeruli with Golgi, granular and mossy fiber
Granule cell body : target DC via glutamate–>excitory
excitory mossy fibers

7
Q

input of cerebellum(+)

A

ipsilateral inferior peduncle: climbing fiber(+)–>purkinje
contralateral middle peduncle: mossy fibers–>granule cells(+)
P(m)R(i)O(I)V(m)S(m)

8
Q

output of cerebellum(-)

A

PURKINJE-DEEP NUCLEI-contralateral SUPERIOR PEPUNCLE
*deep nuclei: DON’T EAT GREASY FOOD-(-)
dentate- lateral-(cerebellodentatothalamic tr.)VL of thal
emoliform, globose- intermediate-(cerebellodentatorubral)Red nucleus
Fastigial-vermis-(fastiaiobulbar tr.)medulla
* purkinje axon(trigemino tr.)-(cerellovestibuar TR)-lateral vestib. nuc

9
Q

appendicular ataxia

A
apraxia 失用症
dysmetria测距不准
dysdiadochokinesia轮替代运动障碍 
intensional tremor
fall with eyes closed
lateral hemispheres
10
Q

sensory ataxia

A

dorsal columns
unsteady stomping gait with heavy heel strikes
postural instability
+romberg sign

11
Q

flocculonodular lobe ataxia

A

vestibulocerebellum
postural instability
seperate feet when standing
titubation(forward-backward falling)

12
Q

truncal ataxia

A

spinocerebellum–vermis
wide-based drunk sailor gait
uncertain start and stops
lateral deviations