the Cerebellum

Question 1

Anatomical lobes of the cerebellum

Answer 1

1. primary fissure

2. posterolateral fissure

Question 2

cerebellar zones

Answer 2

1. vermis
2. intermediate
3. lateral hemispheres

Question 3

functional divisions of the cerebellum

Answer 3

1. cerebrocerebellum
2. Spinocerebellum
3. Vestibulocerebellum

Question 4

cerebrocerebellum

Answer 4

1. largest division formed by lateral hemispheres
2. involved in planning movements and motor learning
3. recieves input from cerebral cortex and pontine nucleus

Question 5

spinocerebellum

Answer 5

1. comprised of vermis and intermediate zone of the cerebellar hemisphere
2. recieves proprioceptive information
3. regulating body movements by allowing error correction

Question 6

Blood supply of the cerebellum

Answer 6

recieves blood from three paired arteries

1. Superior cerebellar artery (SCA)
2. Anterior inferior cerebellar artery (AICA)

BOTH ARE BRANCHES OF THE BASILAR ARTERY

3. Posterior inferior cerebellar arterior (PICA)
   BRANCH OF VERTEBRAL ARTERY

Question 7

venous drainage of cerebellum

Answer 7

superior and inferior cerebellar veins

Question 8

manifestations of cerebellar dysfunction

Answer 8

1. D-ysdiadochokinesia - difficulty carrying out rapid alternating movements
2. A taxia
3. Nystagmus
4. Intension tremor
5. Scanning speech
6. Hypotonia