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22 Cards in this Set

  • Front
  • Back
Basal Ganglia Components
Caudate Nucleus
Globus Pallidus (GPi, GPe)
Substantia Nigra (SNc, Snr)
Subthalamic Nucleus (STN)
caudate + putamen
Corpus Striatum
Globus Pallidus + Caudate + Putamen
Lentiform Nucleus
Putamen + Globus Pallidus
Striatal Afferent
Neocortex; virtually the whole cortical mantle projects to the striatum
Substantia Nigra Compacta; contains neurons that project to the striatum and produce dopamine, which permits the flow of info through the striatum. Parkinsons disease is the lack of substantia nigra cells, so info can't flow through the striatum and motor pathways can't be examined and corrected and all that.
striatal efferents
GPe (globidus pallidus externus)indirect
GPi (globidus pallidus internus)direct
Pallidal efferents
GPe: to STN (Subthalamic nucleus)
GPi and SNr: to VA or VL (Ventral anterior or lateral nucleus of thalamus)
SNr afferent
back to GPi, then proceed as normal (to SNr and both to VA/VL of thalamus)
Thalamic Efferents (projections)
PMC = Premotor cortex
SMA = supplementary motor area
Primary Motor Cortex; precentral gyrus.
lenticulostriate arteries
feed the motor cortex areas; when blocked, results in a motor programming and commanding deficiency
Corticostriatopallidothalamocortico Direct Pathway
Motor Cortex - Striatum - GPi and SNr -
VA/VL of thalamus - SMA or Motor Cortex
Corticostriatopallidothalamocortical Indirect Pathway
Motor Cortex - Striatum - GPe - STN - GPi and SNr - VA/VL of thalamus - cortex

Modulates neurons headed to the spinal cord to produce a motor program.
Important Anatomical divisions of Cerebellum
Anterior/Posterior lobes, Primary Fissure, Vermis, Right/Left Cerebellar Hemispheres, Flocconodular lobe, Cerebellar Peduncles.
Cerebellar Functional Subdivisions (3)
Vestibulocerebellum Anatomical Location
Flocconodular lobe (base of cerebellum)
Contains 'Lateral vestibular nucleus (not so important) receives info from vestibular apparatus in ear regarding equilibrium and balance.
Spinocerebellum anatomical region
Vermis, Intermediate Hemisphere.
Contains Fastigial Nucleus, and Interposed: Emboliform + globose
Spinocerebellum function
Receives descending motor info from cerebral cortex to the vermis/fastigial nucleus, and compares it to afferent info from spinocerebellar tracts regarding peripheral activity. Sends internal feedback to the motor cortex via medial systems (nuclei in midbrain)
Cerebrocerebellum anatomical location
lateral hemispheres of the cerebellum
Cerebrocerebellum function
contains dentate nucleus. recieves cortex info via pontine nuclei to compare to sensory info, sends integrated feedback to premotor cortex for initiation, planning, and timing.
Cerebellum Afferents
Spinal cord (sensory)
Vestibular nuclei (sensory)
Pontine Nuclei (motor intent)
Cerebellum Efferents (outputs)
via deep cerebellar nuclei, sends info to VL in thalamus, then to motor cortex.