Cerebellum Flashcards
What is the function of the cerebellum?
Cerebellum compares motor actions and sensory feedback (feedback loop)
Detects errors and corrects them
Predict outcomes (feedforward loop)
What is the blood supply like in the cerebellum?
Superior cerebellar artery- superior half
Inferior anterior/posterior cerebellar arteries- inferior half
What separates the cerebrum from the cerebellum?
Tentorium Cerebelli (Fibrous membrane)
What separates the right and left hemispheres?
Vermis
What are the 3 lobes in the cerebellum?
Anterior
Posterior
Floculonodular
What does the primary fissure separate?
Anterior and posterior lobe
What does the posterolateral fissure separate?
Posterior and floculonodular lobe
What are the deep cerebeller nuclei?
Dentate, Emboliform, Globose, Fastigial
What are the 3 functional areas of the cerebellum?
Spinocerebellum, Pontocerebellum, Vestibulocerebellum
Where is the spinocerebellum found?
Anterior lobe, vermis
What nuclei does the spinocerebellum contain?
Emboliform and Globose, Fastigial
What is the function of the spinocerebellum?
Balance and coordination of trunk and limbs
What ASCENDING tracts does the spinocrebellum receive information from?
*Think of the function of the spinocerebellum. (Balance and coordination of the trunk and limb)
Which ascending tracts convey unconscious proprioception for the limbs?
Posterior spinocerebellar
Cuneocerebellar tract
What DESCENDING tracts receives feedback from the Spinocerebellum?
Reticulospinal (fastigial)
Vestibulospinal (fastigial)
Rubrospinal (Globose and Emboliform)
Where can the pontocerebellum be found?
Lateral hemispheres of the cerebellum
What nucleus can be found in the pontocerebellum
Dentate nucleus
What is the function of the pontocerebellum?
Concerned with fast movements and timing (e.g typing)
Where does the Pontocerebellum receive information from?
Contralateral motor cortex via dentate nucleus and pontine
Where does the pontocerebellum send feedback to?
What tract?
Contralateral motor cortex via the thalamus
Where can the vestibulocerebellum be found?
Floculonodular lobe
What nucleus does the vestibulocerebellum contain?
Fastigial