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30 Cards in this Set
- Front
- Back
Part of cerebellum that herniates and presses on cardio/ respiratory centers in medulla if intracranial pressure increases |
tonsil |
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Arterial supply of cerebellum |
-Superior cerebellar a -AICA -PICA |
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Vestibulocerebellum |
-flocculonodular lobe (2 flocculi + 1 nodule) -inferior vermis |
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Spinocerebellum |
Vermis+ intermediate zone control of movements |
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Cerebrocerebellum |
Control of planning and initiating movements Lateral zone |
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Where do climbing fibers come from |
inferior olivary nucleus
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what are the major output neurons from the cerebellum called? |
deep cerebellar nuclei
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Dentate nuclei |
deep cerebellar nuclei that receive projections from lateral zones of cerebellum
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interposed nuclei |
-emboliform + globose
-deep cerebellar nuclei that receive projections from intermed. zones of cerebellum |
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Fastigial Nuclei |
deep cerebellar nuclei that receives projections from vermis and flocculonodular lobe |
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which cells in cerebellum form parallel fibers |
granule cells |
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What is the uvula |
inferior vermis |
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restiform body |
inferior peduncle |
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brachum conjuctivum |
superior peduncle |
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What is tibutation |
abnormal swaying of the trunk |
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ataxia |
the loss of full control over body movements |
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basal ganglia is mainly derived from the |
telencephalon |
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origins of monoaminergic afferents to the cerebellum |
-raphe nuclei -locus ceruleus |
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locus ceruleus |
source of noradrenergic fibers to the cerebellum |
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pars compacta, pars reticulata |
part of substantial nigra |
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pars compacta |
-SNc -dopaminergic |
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sources of arterial supply to the basal ganglia |
-ACA -MCA -posterior communicating a |
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General Functions of Basal Ganglia |
-movement regulation -forms extrapyramidal system -eye movement -memory of orientation in space - cognition -habit learning |
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usual reason for disruption of basal ganglia |
disruption of neurotransmitter metabolism (dopamine, GABA, Ach) |
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Causes of Abnormal movements (related to basal ganglia disorders) |
release of inhibition |
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Parkinson's disease and symptoms |
-degeneration of dopaminergic cells in SNc sunstantia nigra compacta) -tremor at rest, bradykinesia, rigidity |
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huntington's disease and symptoms |
degeneration of cholinergic and GABAergic neurons in striatum chorea, athetosis, dystonia (all are involuntary muscle contractions) |
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tardive dyskinesia and symptoms |
Involuntary movements of face and tongue long term use of antipsychotic drugs |
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side effects of long term antipsychotic drug use |
block of dopamine transmission |
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Hemiballismus
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lesion of subthalmic nucleus "ball throwing" movements of contralateral arm |