4.3 neuro - cerebellum

Question 1

Function of cerebellum

Answer 1

maintains posture and balance, active in learning and performing rapid, coordinated, highly skilled movement
monitors actual movement by recieving information from proprioceptors and compares command signals with sensory input
sends out corrective feedback to upper motor neurons if intended and actual movement don’t align

Question 2

Does the cerebellum send and receive information contralaterally or ipsilaterally

Answer 2

ipsilaterally

Question 3

What do basal nuclei do vs what does the cerebellum do

Answer 3

basal nuclei chooses motor behavior, cerebellum monitors and corrects

Question 4

How is the cerebellum attached to the brain stem

Answer 4

by 3 paired peduncles, superior inferior and middle

Question 5

Where do the superior cerebellar peduncle fibers project

Answer 5

to the motor thalamus then to the cortex

Question 6

Where do the inferior cerebellar peduncle fibers project

Answer 6

enter from the medulla and spinal cord

Question 7

Where do the middle cerebellar peduncle fibers project

Answer 7

enter from the pons

Question 8

What is the vermis

Answer 8

midline structure of the cerebellum

Question 9

What are the 3 cell layers of the cerebellum

Answer 9

molecular layer (superficial): lots of connections few neurons
purkinje layer: projects to deep cerebellar nuclei
granule layer: lots of cells and lots of connections and neurons

Question 10

Flow of information in the cerebellum

Answer 10

Information arrives via the inferior and middle cerebellar peduncles and is processed in the cerebellar cortex, purkinje cells project to deep cerebellar nuclei, deep nuclei send out information via the superior cerebellar peduncle