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49 Cards in this Set
- Front
- Back
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what is the oldest part of the cerebellum
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archicerebellum
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what lobe is associated with the archicerebellum
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floculonodular lobe
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what lobe is associated with the palleocerebellum
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anterior lobe
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what lobe is associated with the neocerbellum
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posterior/middle lobe
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what are the regional subdivisions of the anterior lobe
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1-5
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what are the regional subdivisions associated with the posterior/middle lobe
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6-7
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what is the function of the anterior lobe
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-posture and muscle tone
controls antigravity musculature and recieves proprioceptive inputs from the limbs |
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what is the function of the posteior/middle lobe
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-coordination of skilled movement initated by the cerebral cortex
-recieves afferent projections from teh cerebral cortex via pontine nuclei |
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what is the function of the flocculonodular/posterior lobe
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-spatial orientation/equilibrium
-recieves information from teh vestibular system |
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what are the cellular layers of the cerebellar cortex
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-outer molecular layer
-middle purkinje layer -inner granular layer |
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what are the cell types associated with the cerebellar cortex
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purkinje
granule mossy basket stellate golgi |
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what cell bodies do you find in the outer molecular layer
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stellate and basket cells
dedritic arborizations of purkinje cells |
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what cell bodies do you find in the middle purkinje layer
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purkinje cell bodies
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what cell bodies do you find in the inner granular layer
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granular cells and golgi cells with rossettes of mossy form cerebellar glomeruli
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what is the only output cell from the cerebellar cortex
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purkinje cells
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what is the main effect of the purkinje cells
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inhibitory influence on the cells of the vestibular nuclei
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what cells excite purkinje cells
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parallel fibers of granule cell and climbing fibers from the cells of the the inferior olivary nucleus
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what cell inhibit purkinje cells
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basket and stellate cells
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where do purkinje cells synapse
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on deep cerebellar nuclei
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what is the neurotransmitter of purkinje cells
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GABA
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what is the main function of the granule cells
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excite purkinje, basket, stellate, and golgi cells via their parallel fibers
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what are granule cells inhibited by
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golgi cells
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what are granule cells exicited by
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mossy fibers
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what is the neurotransmitter of granule cells
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glutamate
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where do mossy fibers recieve thier afferent signals from
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spinocerebellar, pontocerebellar, and vestibulocerebellar pathways
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where do mossy fibers terminate at
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as rosettes on granule cell dendrites
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what do mossy fibers excite
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granule cells
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what is the neurotransmitter of mossy fibers
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glutamate
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what is the function of basket cells
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inhibit purkinje cells
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what are basket cells excited by
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granule cells
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what is the neurotransmitter of basket cells
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GABA
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what is the function of stellate cells
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inhibit purkinje fibers
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what are stellate cells excited by
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granule cells
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what is the neurotransmitter of stellate cells
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GABA
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what is the function of golgi cells
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inhibit granule celss
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what are golgi cell excited by
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granule cells
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what is the neurotransmitter of golgi cells
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GABA
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what is the neurotransmitter of climbing fibers
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aspartate
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where do the climbing fibers ascend from
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inferior olivary nuclei
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what are the deep cerebellar nuclei
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Dentate
Nucleus Interpositus Fastigial |
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what are the components of the nucleus interpositus
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emboliform
globose |
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what is the position of the deep cerebellar nuclei
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dentate=lateral
nucleus interpositus=intermediate to dentate and fastigial fastigial=center medial |
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how does information get in and of the cerebellum
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through the cerebellar peduncles superior, middle, and inferior
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how does information get out of the cerebellum
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through the superior and inferior cerebellar peduncles
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what are the two classifications of cerebellar dysfunction
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dysynergies
hypotonias |
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what is dysarthria
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tounge posture
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what is dysdiadocokinesia
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loss of rapidly alternating movements
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what is titubation
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head bobbling up and down
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what is tremor intention
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shake when you intend to move
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