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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

Arterial supply of cerebellum

-Superior cerebellar a


-AICA


-PICA

Vestibulocerebellum

-flocculonodular lobe (2 flocculi + 1 nodule)


-inferior vermis

Spinocerebellum

Vermis+ intermediate zone


control of movements


Cerebrocerebellum

Control of planning and initiating movements


Lateral zone

Where do climbing fibers come from

inferior olivary nucleus

what are the major output neurons from the cerebellum called?

deep cerebellar nuclei

Dentate nuclei

deep cerebellar nuclei that receive projections from lateral zones of cerebellum

interposed nuclei

-emboliform + globose

-deep cerebellar nuclei that receive projections from intermed. zones of cerebellum


Fastigial Nuclei

deep cerebellar nuclei that receives projections from vermis and flocculonodular lobe

which cells in cerebellum form parallel fibers

granule cells

What is the uvula

inferior vermis



restiform body

inferior peduncle

brachum conjuctivum

superior peduncle

What is tibutation

abnormal swaying of the trunk

ataxia

the loss of full control over body movements



basal ganglia is mainly derived from the

telencephalon

origins of monoaminergic afferents to the cerebellum

-raphe nuclei


-locus ceruleus

locus ceruleus

source of noradrenergic fibers to the cerebellum

pars compacta, pars reticulata

part of substantial nigra



pars compacta

-SNc


-dopaminergic

sources of arterial supply to the basal ganglia

-ACA


-MCA


-posterior communicating a

General Functions of Basal Ganglia

-movement regulation


-forms extrapyramidal system


-eye movement


-memory of orientation in space


- cognition


-habit learning



usual reason for disruption of basal ganglia

disruption of neurotransmitter metabolism (dopamine, GABA, Ach)

Causes of Abnormal movements (related to basal ganglia disorders)

release of inhibition

Parkinson's disease and symptoms

-degeneration of dopaminergic cells in SNc sunstantia nigra compacta)




-tremor at rest, bradykinesia, rigidity





huntington's disease and symptoms

degeneration of cholinergic and GABAergic neurons in striatum




chorea, athetosis, dystonia (all are involuntary muscle contractions)

tardive dyskinesia and symptoms

Involuntary movements of face and tongue


long term use of antipsychotic drugs



side effects of long term antipsychotic drug use

block of dopamine transmission

Hemiballismus

lesion of subthalmic nucleus


"ball throwing" movements of contralateral arm