Term
| Ventral aspect of the cerebellum |
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Definition
Recognize anterior lobe (with vermis)
Posterior lobe (with vermis and tonsil)
Flocculonodular lobe (vermis is known as nodule)...you also have cerebellar peduncle (inf, middle and sup) |
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Term
| Contained within core of cerebellum |
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Definition
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Term
| What composes the interposited nuclei? |
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Definition
| emboliform and globose nucleus |
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Term
| What are the layers from to deep to superficial? |
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Definition
| Granule, Purkinge and Molecular |
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Term
| Where does Purkinje terminate? |
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Definition
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Term
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Definition
Target: deep cerebellar nuclei
GABA (-) |
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Term
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Definition
Purkinje cell dendrites (via parallel fibers)
Glutamate (+) |
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Term
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Definition
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Term
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Definition
Granular cell glomerulus
GABA (-) |
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Term
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Definition
Purkinje cell dendriates
Taurine (-) |
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Term
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Definition
Granular cell glomerulus
Ach (+)
represent all source of input to the cerebellum |
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Term
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Definition
Purkinje Cell
Aspartate (+)
Originate from inferior olivary nucleus |
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Term
| Location of various cell types within the cerebellar cortex |
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Definition
Granule Cell layer: granule cells and golgi cells
Purkinje cell layer: Purkinje cells
Molecular layer: stellate cells and basket cells |
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Term
| Mossy fibers terminate in the ______ while climbing fibers terminate by _______ |
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Definition
| granule cell layer, winding around dendrites of Purkinje cells in the molecular layer |
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Term
| Purkinje cells are _______ |
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Definition
| the only output of the cerebellar cortex and they are all inhibitory |
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Term
| All cerebellar cortical output is _______ |
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Definition
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Term
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Definition
| the axons that bifurcate to run at 90 degrees to the dendritic trees of the Purkinje fibers |
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Term
| Glomeruli are better known as what |
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Definition
| The specializations invovling the terminal synapse of mossy fibers (which are +) and golgi cell axon terminals are (-) |
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Term
| Corticopontocerebellar pathway |
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Definition
| Form most areas of the cerebral hemispheres...this pathway is crossed and enters the cerebellum by way of the middle cerebellar peduncle |
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Term
| Vestibulocerebellar pathway |
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Definition
| some vestibular fibers reach the cerebellum directly while the majority synapse in the vestibular nuclei before entering the ipsi cerbellum via the inferior cerebellar peduncle (juxtarestiform body) |
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Term
| Reticulocerebellar pathway |
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Definition
| from the brainstem reticular formation (all levels). This pathway may be crossed but the majority of fibers remain ispi and pass through the inf cerebellar peduncle |
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Term
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Definition
| Anterior spinocerbellar pathway usually crosses in cord and then again back to the side of origin within the sup cerebellar peduncle although some fibers remain ipsi |
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Term
Mossy fibers make these kinds of connections in the deep cerebellar nuclei.
Hint: glomerular input by mossy fibers are also this way |
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Definition
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Term
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Definition
| serve as gateway to cortical processing in the cerebellum. The parallel fibers that they have make excitatory connections with Purkinje cell dendritates as well with dendrites of golgi cells, basket cells and stellate cells |
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Term
| A single Purkinje cell can be contacted by as many _______ parallel fibers and a single parallel fiber may pass through and contact the dendrites of as many as _______ Purkinje cells |
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Definition
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Term
| What axons represent the single source of cerebellar cortical output? |
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Definition
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Term
| How does the cerebellovestibular pathway pass to the vestibular nuclei? |
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Definition
| the inferior cerebellar peduncle |
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Term
| The cerebellonuclear pathway terminates in the? |
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Definition
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Term
| What are the three sources of cerebellar input |
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Definition
| Inferior olivary nucleus, climbing fibers, and Purkinje cells |
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Term
| climbing fibers arise from what? |
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Definition
| The contralateral principal (inf) olivary nucleus. They are excitatory and give off axon collaterals to the deep cerebellar nuclei before terminating in the cortex |
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Term
| Parallel fiber collaterals lead to what type of reaction of granule cells and golgi cells? |
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Definition
| excitation of granule cells that lead to excitation of golgi cells |
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Term
| Gated feed-back inhibition |
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Definition
| excitation of golgi cells that will inhibit mossy fiber input to granule cells |
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Term
| Input to the cerebellar cortex is ______ while cortical output is _______ |
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Definition
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Term
| These two make excitatory contacts with the deep cerebellar nuclei |
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Definition
| mossy and climbing fibers |
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