Cerebellum (2) Flashcards
What does the cerebellum act as?
Comparator
What is the pathway of the cerebellum?
Motor cortex
Pons
Cerebellum
Thalamus
Motor cortex
Where does the cerebellum synapse with more tract cell bodies at?
Motor cortex
Premotor cortex
Brainstem
What does a lesion to the cerebellum lead to?
Ataxia
What are the three lobes of the cerebellum?
Anterior lobe
Posterior lobe
Flocculonodular lobe
What is the most inferior portion of the cerebellum called?
Cerebellar tonsil
How does the cerebellum attach to the brainstem?
3 peduncles (superior, middle, and inferior)
What is involved in the superior peduncles?
Mainly Cerebellar outputs
What is involved in the middle peduncle?
Input of the cerebral cortex info via the pons
What is involved in the inferior peduncle?
Input from brainstem and spinal cord
Output to vestibular nuclei and reticular nuclei
What are the three arteries that supply the cerebellum?
Superior Cerebellar artery
Anterior inferior Cerebellar artery
Posterior inferior Cerebellar artery
What does the superior Cerebellar artery supply?
Superior cerebellum and small portion rostral laterodorsal pons
What does the anterior inferior Cerebellar artery supply?
Lateral caudal pons and small portion of cerebellum
What does the posterior inferior Cerebellar artery supply?
Lateral medulla and inferior cerebellum
Where are Cerebellar artery infarcts most common?
In the PICA and SCA
