Term
| from which embryonic vesicle does the cerebellum develop (which -encephalon)? |
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Definition
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Term
| is the cerebellum mainly involved in motor or sensory? |
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Definition
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Term
| what is the main function of the cerebellum (in a nutshell) |
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Definition
| motor coordination/fine motor control/balance |
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Term
| what are the 2 parts of the cerebellum? |
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Definition
1. vermis (in the midline)
2. anterior and posterior lobes (or hemispheres)
3. floccular and nodular lobes |
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Term
| if you damage the left cerebellum, on which side would you see diminished motor function? |
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Definition
| left side (cerebellum controls ipsilateral) |
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Term
| motor information comes down and crosses over to the cerebellum into the ____ ____ ____ |
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Definition
| middle cerebellar peduncle |
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Term
| the inferior olive is located in the (caudal/rostral) section of the medulla |
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Definition
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Term
| the cerebellar cortex is mad up of how many layers? |
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Definition
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Term
| what is the "principle cell in the cerebellum"? |
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Definition
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Term
| output from the purkinje cells of the cerebellum first goes to which cerebellar nucles? |
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Definition
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Term
| what 2 fiber pathways bring information into the cerebellum? |
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Definition
| climb fibers and the mossy fibers |
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Term
| climb fibers originate in the ____ ___ |
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Definition
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Term
| cerebellar output goes to which 2 nuclei of the thalamus before proceeding to the cortex? |
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Definition
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Term
| the inferior/posterior lobe is smaller |
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Definition
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Term
| input to the cerebellum travels via the _____s |
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Definition
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Term
| the main lobed structures of the cerebellum are called |
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Definition
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Term
| the folium has 3 layers…what are they? |
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Definition
Purkinje cell layer
granular layer
molecular layer |
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Term
| mossy fibers synapse on what cells in the cerebellum? |
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Definition
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Term
| granule cell axons extend into the ___ layer |
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Definition
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Term
| what are 3 inhibitory cell types in the cerebellum? |
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Definition
| stellate, basket, and golgi cells |
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Term
| what are the 4 nuclei of the cerebellum? |
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Definition
Dentate, Emboliform, globose, fastigial
("Don't eat green frogs") |
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Term
| what 2 tracts mainly bring info to the cerebellum? |
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Definition
| corticospinal and corticobulbar |
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Term
| descending motor has to send a copy to the cerebellum and it does that by a collateral branch that goes to the ___ ___ |
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Definition
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Term
| pontine fascicles bridge across and into the ___ ____ ____and then to the cerebellum via mossy fibers. |
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Definition
| middle cerebellar peduncle |
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Term
| the external cuneate nucleus is found in the ____ |
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Definition
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Term
| ____ column is a relay for the dorsal spinocerebellar tract located in the spinal cord |
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Definition
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Term
| the inferior olive projects via the ____ to the cerebellar cortex |
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Definition
| inferior cerebellar peduncle |
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Term
| True or false - The inferior olive receives only sensory input? |
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Definition
| false - motor and sensory |
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Term
| motor input to the inferior olive is principally for which nucleus? |
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Definition
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Term
| sensory input to the inferior olive is via the ___ ____ ___ |
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Definition
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Term
| true or false - the cerebellum only gets sensory info about unconscious propriocepton |
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Definition
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Term
| true or false, a lesion of the inferior olive would affect only motor pathways |
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Definition
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Term
| the floccullus is also called |
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Definition
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Term
| damage to cerebellum causes |
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Definition
ataxia (clumsiness, uncoordinated moevement
nystagmus - eye movement problems
hypotonia - lack of muscle tone |
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Term
| how do you test for syphilis? what is the test called? |
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Definition
get patient to close eyes…if they fall over they have syphilis
this is called the Romberg test |
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Term
| how does syphilis affect the cerebellum? |
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Definition
| tertiary syphilis destroys dorsal columns and proprioceptive info coming up to the cerebellum. Without this, you fall down when your eyes are closed bc you use proprioception to maintain balance normally when eyes are closed |
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Term
| what causes nystagmus? (damage to what part of the cerebellum? |
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Definition
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Term
| T or F - the "finger to nose test" can help diagnose damage in the cerebellum? If there are problems in successfully completing this action, the patient is said to have |
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Definition
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Term
| purkinje cells are associated with which neurotransmitter? |
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Definition
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Term
| the cerebellum is mainly (excitatory/inhibitory) in function? |
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Definition
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Term
| what fibers come from mossy fibers and synapse on granular cells? |
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Definition
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Term
| everything in and out of the cerebellum goes through the ____ ____ |
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Definition
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