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26 Cards in this Set

  • Front
  • Back
what is the vermis?
-the midline region
what divides the anterior and posterior lobes?
-primary fissure
what separates the posterior and flocconodular lobes?
-posterolateral fissure
what are the 3 major pairs of nuclei in the cerebellum?
-interpositus (globose & emboliform)
what is the orientation of the 3 nuclei from medial to lateral?
-fastigial > interpositus > dentate
what does the vestibulocerebullum include and what is its function?
-flocculus and nodulus
-involved in posture and equilibrium
what does the spinocerebellum include?
-vermis and intermediate zone
what is the function of the vermis?
-proximal muscle movement
-vestibulo ocular responses
what is the nucleus interpositus concerned with?
-larger movements of walking and running
what is the cerebrocerebellum composed of?
-lateral aspects of anterior and posterior lobes
-dentate nuc
what is the function of the cerebrocerebellum?
-controls tasks of fine dexterity
what are the three pathways that connect the cerebellum to the brainstem?
-inferior, middle and superior cerebellar peduncles
what are the three microscopic layers of the cerebellum?
what are the characteristics of midline cerebellar disorder?
-seen in alcoholic cerebellar degeneration
-wide based stance and ataxia of gait
-hypotonia, nystagmus, dysarthria
what are the characteristics of hemispheric cerebellar syndrome?
-seen in infarcts, hemorrhages, tumors, abscesses, and MS
-inccordination of ipsilateral appendicular movements
what are the characteristics of pancerebellar syndrome?
-all symptoms of other two
-seen in infectious, neoplastic, and neurodegenerative disorders
what are the four cell types in the granular layer?
-mossy fibers
-climbing fibers
-granule cells
-golgi cells
what is the function of mossy fibers?
-activate granule cells and efferent cerebellar nuclei
what is the function of climbing fibers?
-localized bursting of purkinje cell activity
what is the function of granule cells?
-activates purkinjes
what is the function of golgi cells?
-inhibits granule cells
what are the two cell types in the purkinje cell layer?
-purkinje cells
-basket cells
what is the function of purkinje cells?
-inhibit deep cerebellar nuclear outflow
what is the function of basket cells?
-inhibit nearby purkinje cells
what cell type is found in the molecular cell layer?
what is the function of stellate cells?
-inhibit nearby purkinje cells