Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
What are the three major inputs to the cerebellum?
|
Spinal cord and brainstem
Cerebral cortex in corticoponitine cerebellar tract Inferior olivary nucleus in olivocerebellar tract |
|
|
Where does cerebelar output go to?
|
Ventrobasal thalamus
Red nucleus Vestibular and reticular nuclei |
|
|
How many synapses do parallel fibers make with each Purkinje cell?
|
1
|
|
|
How many parallel fibers does a single Purkinje fibre recieve from parallel fibres
|
200000
|
|
|
What is the primary role of the cerebellum?
|
Coordinating movements from the motor cortex, initiatiiing movements, and learning new motor tasks
|
|
|
What are the components of the basal ganglia?
|
Striatum (Caudate and Putamen)
Globus Pallidus (pars interna and pars externa) Substantia nigra (pars compacta and pars reticulata) Subthalamic nucleus |
|
|
Where do inputs to the basal ganglia come from?
|
Cortex
|
|
|
Where do projections from the basal ganglia go to?
|
Thalamus
|
|
|
What is the role of mossy fibres in the cerebellum?
|
Bring information in from spinocerebellar tracts (propioception) and corticopontine cerebellar tract (sensory and motor) and synapse with granule cells.
|
|
|
What is the role of climbing fibres in the cerebellum?
|
Carry information from the inferior olivary nucleus via olivocerebellar tract and wind around Purkinje fibres forming synapses.
|
|
|
What is the role of parallel fibres in the cerebellum?
|
Carry information from one granule cell to 2000-3000 purkinje cells
|
|
|
What it the role of Golgi type II cells in the cerebellum?
|
Temporal focusing
Recieve input from parallel fibers and synapse with granule cells to provide feedback inhibition. |
|
|
What is the role of Basket cells and Stellate cells?
|
Spatial focusing of the cerebellum
By inhbiting off beam purkinje cells |
