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10 Cards in this Set
- Front
- Back
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What is the basal ganglia?
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A collection of gray matter nuclei located deep within the white matter of the cerebral hemispheres.
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What are the 6 sections of the basal ganglia?
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Caudate, Putamen, Subthalamic nucleus, globus pallidus, and substania nigra
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What comprises the striatum?
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Caudate and Putamen
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What is the striatum's role?
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The major input nuclei to the basal ganglia
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What is the role of the globus pallidus and substantia nigra?
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They are the major output nuclei of the basal ganglia.
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What makes up the lentiform nucleus?
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Putamen and globus pallidus
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What does the basal ganglia do?
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It controls and regulates activities of the motor and premotor cortex via various circuits so that voluntary movements may be performed smoothly.
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What are the two predominant pathways that form input to output nuclei through the basal ganglia?
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The direct and indirect pathways.
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What two structures have similar embryologic origin?
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Globus pallidus interna and substantia nigra reticulata
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What is the pathway of the direct pathway?
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cortex -> striatum -> GPi/SNr -> thalamus -> motor cortex
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