CEREBELLUM - MODULE Flashcards
Where is the cerebellum located
in the posterior cranial fossa underneath the tentorium cerebelli
How is the cerebellum connected to the brainstem
through 3 cerebellar peduncles
What structure is the cerebellum embryologically related to
the pons
Where do you find the 4th ventricle
Between the pons and the cerebellum
What structures of the cerebellum make up the spinocerebellum
Anterior lobe, Vermis, Paravermis
What structures of the cerebellum make up the cerebrocerebellum
most posterior lobe
What structures of the cerebellum make up the vestibulocerebellum
Flocculus and Nodule
What is the main output nucleus from the cerebellum
the dentate nucleus
What are the afferents of the superior cerebellar peduncle
- Anterior spinocerebellar tract
- Acoustic and optic information
What are the efferents of the superior cerebellar peduncle
- Dentatorubrothalamic tract
- Dentatothalamic tract
What are the afferents of the middle cerebellar peduncle
Pontocerebellar tract
What are the efferents of the middle cerebellar peduncle
non
What are the afferents of the inferior cerebellar peduncle
- Vestibulocerebellar tract
- Olivocerebellar tract
- Posterior spinocerebellar tract
What are the efferents of the inferior cerebellar peduncle
- Cerebello-vestibular tract
- Cerebello-olivary tract
What is the function of the vestibulocerebellar loop
Coordination of balance, vestibulo-ocular reflex, output to lower motor neurons for trunk and limb stability
What is the function of the spinocerebellar loop
Coordination and correction of trunk and limb movements
What is the function of the cerebrocerebellar loop
Streamlining the cortical output
Input from the cortex to the cerebellum is relayed through _____
the pontine nuclei
Input from the cortex to the cerebellum is relayed through the pontine nuclei, what occurs to the information from here
fibres cross the midline and enter the posterior lobe through the middle cerebellar peduncle
Any influence of the cerebellum back to the LMN in the spinal cord will be via…
the corticocospinal tract
What are the main blood supplies to the cerebellum
- anterior inferior cerebellar artery
- Posterior inferior cerebellar artery
- superior cerebellar artery
What regions does the anterior interior cerebellar artery supply?
- Cerebellar peduncles
- Flocculus, nodule
- Lateral aspect of posterior lobe on inferior surface
- Assists with supply to deep cerebellar nuclei
What regions does the posterior interior cerebellar artery supply?
- Posterior lobe - inferior surface, extending onto superior surface
- Tonsils
- Inferior part of vermis
What region does the superior cerebellar artery supply?
- Anterior lobe
- Posterior lobe - superior aspect, strip adjacent to anterior lobe
- Vermis on superior surface
- Major supply to deep cerebellar nuclei
- Can provide supply to SCP and rostral parts of MCP
