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32 Cards in this Set
- Front
- Back
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What is the primary function of the cerebellum?
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To detect error in planned movements
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What three nuclei are associated with the cerebellum?
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Fastigial
Interposed Dentate |
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What are the three regions of the cerebellum?
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Spinocerebellum
Cerebrocerebellum Vestibulocerebellum |
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To which nuclei do the different regions of the cerebellum project?
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SC: Fastigial and interposed
CC: Dentate VC: Vestibular nuclei |
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Which side of the body does each lobe of the cerebellum control?
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Ipsilateral side.
Info from and to the cerebral cortex must cross over |
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What information flows through the superior cerebellar peduncle?
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Efferents to the thalamus about corrections in movement
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What information flows through the middle cerebellar peduncle?
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Afferents from the cerebral cortex (via the contralateral pontine gray) about what muscle action are supposed to happen.
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What information flows through the inferior cerebellar peduncle?
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Afferents from the spinal cord, the inferior olive and the vestibular nucleus about what is happening.
Efferents to the vestibular nucleus. |
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What structure receives most of the outputs of the deep cerebellar nuclei?
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Thalamus (VA/VL)
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What (4) cortex regions are responsible for inputs to the cerebrocerebellum?
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Frontal and parietal
Motor and premotor sensory cingulate |
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What is the function of the cerebrocerebellum?
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Planning of movement
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Where does information going from the cerebellum to the cerebral cortex cross over?
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in the superior cerebellar peduncle on its way to the thalamus (VL)
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Through which peduncle will information be sent from the cerebral cortex to the cerebrocerebellum? Will the information cross sides?
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MCP through the pontine gray
Crossed |
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Through which peduncle will information from the olive pass? Will the information cross sides?
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ICP
Crossed |
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Through which peduncle will information from the vestibular nucleus pass? Will the information cross?
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ICP
Will not cross |
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Which afferent to the cerebellum will cross over? Which will not?
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Will:
From the cortex From the inferior olive Will not: From spinal cord From the vestibular nuclei |
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What is Clarke's column? What is an equivalent nucleus?
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Origin of the dorsal spinocerebellar tract which carries information about muscle length, tension, and velocity to the cerebellum. (muscles below C8)
Accessory Cuneate nucleus is the upper limb equivalent. |
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What spinal column range is Clarke's column found?
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C8-L3
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What information is collected in in the Dorsal spinocerebellar tract?
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information about muscle length, tension, and velocity
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What nucleus collects muscle length/tension information above C8?
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Accessory cuneate
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What are the three layers of the cerebellum?
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Molecular layer
Purkinje cell layer Granule cell layer |
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In which layer can you find the deep cerebellar nuclei?
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In the white matter
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What are the two types of excitatory input fibers to the cerebellum?
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Mossy
Climbing |
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Where do mossy fibers come from? Where do they go?
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Any afferent fiber that is not from the olive is mossy and enters either on the MCP or ICP, and go to the cerebellar cortex.
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What cells are stimulated by mossy fibers?
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Granule cells in the cerebellum as well as the deep nuclei
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Where do climbing fibers come from? Where do they go?
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All originate from the inferior olive and enter on the ICP. They go to the cerebellar cortex.
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What cells are stimulated by climbing cells?
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Purkinje dendrites and the deep nuclei
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What cells supply inhibitory inputs to the deep cerebellar nuclei?
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Purkinje cells
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What cells supply the only pathway out of the cerebellar cortex?
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Purkinje cells
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What is the only way to get information out of the cerebellar cortex?
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To inhibit the purkinje cells and allow the deep nuclei to be driven by the climbing and mossy fibers
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All of the cells of the cerebellar cortex are inhibitory except ...
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granule cells
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What three interneurons (and there locations) can turn the purkinje fiber off to allow the deep nuclei to fire?
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Stellate and basket in the molecular layer
Golgi in the granule layer |
