Cerebellum

Front 1

what are some of the characteristics of the cerebellum?

Back 1

suprasegmental, great modulator of motor activity, connections are ipsilateral, severe pathological sx are intention tremor and ataxia, sx will typically diminish and performance willimprove

Front 2

how is the cerebellum broken up?

Back 2

hemispheres and midline part called the vermis

Front 3

how many lobes and fissures?

Back 3

3 lobes: anterior and posterior lobes are in the primary fissure
and the posterior and flocculonodular lobes in the posterolateral fissure

Front 4

what two layers comprise the cerebellum?

Back 4

cortex (outer gray matter) and deep layer (white matter0 called medulla

Front 5

how is the cerebellum connected to the brainstem?

Back 5

super, middle, inferior peduncles

Front 6

what are the layers of the cortex?

Back 6

molecular layer - deep to pia
purkinje cell layer - deep to mol layer
granular layer - deep to purkinje

Front 7

what are the cells of the cortex?

Back 7

purkinje cells - only efferents
granule cells - form parallel fibers
stellate cells - in molecular layer
basket cells - in molecular layer
golgi cells - in granular layer

Front 8

what are the two afferent fibers in the cerebellum?

Back 8

mossy fibers - terminate in granular layer and sends collaterals to deep cerebellar nuclei

climbing fibers - from inferior olive and terminates on purkinje cell dendrites to cause the purkinje cell to fire. collaterals are sent to deep cerebellar nuclei

Front 9

where is the central nuclei located?

Back 9

in the white matter of cerebellum

Front 10

what are the types of nuclei in the cerebellum?

Back 10

fastigial nucleus - most medial and serves flocculo-nodular lobe
globose nucleus and emboliform nucleus together are called the nucleus interpositus and serves the spinocerebellum
dentate nucleus is the most lateral and serves the cerebrocerebellum

Front 11

where do the climbing fibers originate? where do they enter and where do they synapse?

Back 11

in the inferior olivary nucleus, enter the cerebellum via the inferior cerebellar peduncle and synapses on the purkinje cell dendrite

Front 12

where do the collaterals of the climbing fibers go?

Back 12

to the deep cerebellar nuclei, which project to the brainstem nuclei and spinal cord

Front 13

where do the mossy fiber system terminates?

Back 13

granular layer as a mossy fiber rosette inside a glomerulus

Front 14

what forms parallel fibers after bifurcating in the molecular layer?

Back 14

granule cells from the glomerulus