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12 Cards in this Set
- Front
- Back
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separation of the cerebellum
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Transverse Fissure: (Tentorium Cerebelli – cranial meninges in TF)
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the central constricted area of the cerebellum that separates the two cerebrellar hemispheres
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Vermis
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What inserts into the Vermis?
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Falx Cerebelli
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controls large subconscious skeletal movement
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Anterior and Posterior Lobes
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equilibrium, posture
-as posture muscles fatigue then the cerebellum will shut off that set and fire another set of posture muscles |
Flocculonodular
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Inferior cerebellar peduncles=
Middle cerebellar peduncles= Superior cerebellar peduncles= |
Inferior cerebellar peduncles= Pons
Middle cerebellar peduncles= Pons Superior cerebellar peduncles= Midbrain |
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What are the roles in learning/performing motor activities of the cerebellum?
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1. Inhibition of non-cerebellar areas
2. Monitors intention 3. Monitors actual movement 4. Sends corrective signals to UMNs in cortex and brainstem motor centers 5. turn-on/turn-off: point where forward motion of one set of segments is stopped and other segments begins cycle (ex. Walking vs. running) |
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Low level activities of the cerebellum are controlled by what?
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Reflex Arches
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Complex activities of the cerebellum are controlled by what?
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FAP: fixed action patterns
(always can be identified—can tell if a person is running or walking) |
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initial level of control, refers to the spinal cord segments; central (CNS) pattern (FAP) generators (causes it to happen)—we could make you walk without your voluntary input
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Segmental - CPGs
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command neurons; you walk when you choose to, the decision comes from the motor cortex, you set a command from these motor neurons done to the CPGs to produce walking pattern; instructs the CPGs to start firing, they fire until you decide to stop
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Projection - command neurons
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cerebellum is planning what you need to do—it sets the plan, sends up to motor cortex; making the plan; highest level of motor control (adjusting of previous learning or the ultimate plan)
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Program/instruction: Cerebellum and basal ganglia
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