Motor Disorders Flashcards
Where is the cerebellum located?
In the posterior cranial fossa at the back of the brain
How is the cerebellum separated from the occipital and parietal lobes?
By the tenorium cerebelli
How is the cerebellum seperated from the pons?
By the 4th ventricle
Where does the cerebellum have an important role?
In motor control and coordination
What does the cerebellum consist of?
The vermis (midline) and two lateral hemispheres
What is the role of the vermis?
It regulates the trunk musculature
What is the role of the lateral cerebellar hemispheres?
They regulate distal structures, i.e. the limbs
Are tracts ipsilateral or contralateral in the cerebellum?
Ipsilateral
How does the cerebellum communicate with the brainstem?
Via the cerebellar peduncles
What are the names of the cerebellar peduncles?
- Superior
- Middle
- Inferior
What does the superior cerebellar peduncle attach?
The cerebellum to the midbrain
What does the middle cerebellular peduncle attach?
The cerebellum to the pons
What does the inferior cerebellar peduncle attach?
The cerebellum to the medulla (ps I changed this one Mollie, thank me later x)
What can midline lesions of the cerebellum cause?
Truncal ataxia and abnormal gait
What can extension of midline lesions of the cerebellum cause?
- 4th cranial nerve lesions
- Ipsilateral arm tremors
- Compression of the 4th ventricle
- Hydrocephalus
