Cerebellum Flashcards
What are the three arteries that supply the cerebellum?
Superior cerebellar artery, anterior inferior cerebellar artery, posterior inferior cerebellar artery
What are the gyri and sulci referred to as in the cerebellum?
Folia and fissures
What are the three anatomical lobes of the cerebellum?
Anterior, posterior, flocculonodular
What is the worm-like structure in the midline of the cerebellum?
Vermis
Where is the primary fissure?
Between the anterior and posterior lobes
Where is the dorsolateral fissure?
Between the posterior and flocculonodular lobes
What are the lobules of the vermis?
Lingula, central, culmen, Declive, Folium, Tuber, Pyramid, Uvula, Nodule
What are the three layers of the cerebellar cortex?
Molecular layer, purkinje cell layer, granular layer
Where do climbing fibers originate?
Inferior olivary nucleus
What are the two types of cortical afferent fibers of the cerebellum?
Climbing and mossy
What is the cortical efferent fibre type of the cerebellum?
Purkinje cells
What neurotransmitter do purkinje cells use?
GABA
What are the four major cerebellar nuclei?
Dentate nucleus, fastigal nucleus, emboliform nucleus, globose nuclei
What is the interposed nucleus?
The globose nuclei + the emboliform nucleus
Which of the cerebellar nuclei is visible with the naked eye?
Dentate nucleus
What are the three functional lobes of the cerebellum?
Spinocerebellum, Corticocerebellum and vestibulocerebellum
What is the role of the spinocerebellum (paleocerebellum)?
Muscle tone and posture
What is the role of the corticocerebellum (neocerebellum)?
Muscle coordination (trajectory, speed, force)
What is the role of the vestibulocerebellum (archicerebellum)?
Maintenance of balance
Where is the cerebrocerebellum?
The lateral hemispheres of the cerebellum
Where is the vestibulocerebellum?
The flocculonodular lobe
What are the three cerebellar peduncles?
Middle, superior and inferior
Which peduncle and region of cerebellar cortex is associated with the dentate nucleus?
Middle cerebellar peduncle and cerebrocerebellar cortex
Which peduncle and region of cerebellar cortex is associated with the globose and emboliform nucleus?
Superior and inferior peduncles, and the spinocerebellar cortex
Which peduncle and region of cerebellar cortex is associated with the fastigal nucleus?
Inferior peduncle and vestibulocerebellar cortex
What are the signs of cerebellar damage?
Dysdiadokinesia, ataxia, nystagmus, intention tremor, slurred speech, hypotonia
