NS 15 (part 2) cerebellum and pathways

Question 1

list three functions of the cerebellum and provide examples

Answer 1

skilled repetitve moves - violinisst
locomotion/ posture - walking
balance - tightrope

Question 2

how do cortico-ponto-cerebellar tracts enter the cerebellum?

Answer 2

enter cerebellum as middle cerebellar peduncle

Question 3

cerebellum ‘‘listens’’ to spinal cord via which tracts?

Answer 3

dorsal spinocerebellar tracts

same side

Question 4

what type of info does the cerbellum gain from the dorsal spinocerebellar tracts

Answer 4

proprioceptive info

Question 5

Balance information from the brain stem arise from where?

Answer 5

vestibular nuclei

vestibulocerebellar tract

Question 6

where does the vestibular inputs go?

Answer 6

they enter through the ipsilateral inferior peduncle- to the floculondular lobe to cortex

Question 7

automatic functions like not falling out of the chair is being taken care of by the?

Answer 7

vestibulocerebellum - floculondular lobe

Question 8

all output occurs via the…

Answer 8

deep cerebellar and vestibular nuclei

Question 9

once the cerebellum answers the motor cortex which tracts are activated?

Answer 9

corticospinal tracts

Question 10

which side does the cerebellum control?

Answer 10

same side

Question 11

through which tracts does the cerbellum talk to the spinal cord ?

Answer 11

reticulospinal and vestibulospina

Question 12

where does the vestibular tract originate from?

Answer 12

vestibular nuclei and flocculondular lobe

Question 13

which type of fibres activate pyrkinjie cells in sequence?

Answer 13

parallel fibres

Question 14

what teaches the pyrkinjie cells which patterns of parallel fibres to respond to?

Answer 14

climbing fibres from inferior olivary nucleus

Question 15

overall function of cerebellum?

Answer 15

• regulates quality of movement
• spinal cerebellum montiors movement via spinal input compares cortical intention with the results
• integrates balance information coordinates muscle activation responsible for equilibration

Question 16

a malfunction on the cerebellum would result in a sign of disease on the ipsilateral side, give a few examples?

Answer 16

disturbed balance - staggering gait

vermal lesion - balance problem