Cerebellum

Question 1

Cerebellum

Answer 1

Smooth and coordinates body movements directed by other brain regions. Refines movements and has a motor memory.
posture and equilibrium
two hemispheres connected by the vermis
folia, arbor vitae
3 lobes:
anterior, posterior, floccuonodular

Question 2

Cortex

Answer 2

outer gray

Question 3

deep cerebellar nuclei

Answer 3

gray. realy info from cerebellar cortex to other parts

Question 4

arbor vitae

Answer 4

internal white matter. carries info from the cerebral cortex.
smooths out movements

Question 5

Types of information (3)

Answer 5

1. equilibrium- relayed from inner ear via vestibular nuclei (VIII) to flocculonodular lobe
2. current movement of body- proprioreceptors via olivary nuclei. received by medial part of anterior and posterior lobes.
3. cerebral cortex- pontine nuclei to lateral portions of the anterior and posterior lobes

Question 6

cerebellar peduncles

Answer 6

3 thick tracts that connect to cerebellum to the brain stem

Question 7

superior peduncle

Answer 7

connect to midbrain. carry info away and to cerebral cortex

Question 8

middle peduncle

Answer 8

connect to pons. carry info into cerebellum from cerebral cortex via pontine nuclei

Question 9

inferior peduncle

Answer 9

arise from medulla and carry fibers from vestibular nuclei (equilibrium) and spinal cord (proprioception) via olivary nuclei

Question 10

Injury (all lobes)

Answer 10

anterior/posterior- decreased coordination

flocculonodular- decreased equilibrium