Cerebellum

Question 1

3 layers of the cerebellum

Answer 1

molecular layer- few neurons- dendrites of perkinjie fibres

purkinjie cell- single row of cell

grannular layer- densely packed neurons

Question 2

cerebellum connections to CNS

Answer 2

superior cerebellar peduncle- midbrain efferent fibres via the thalamic nucleus

middle cerebellar peduncle- pons afferent fibres

inferior cerebellar peduncle- medulla afferent fibres and vestibular

Question 3

functions of the cerebellum

Answer 3

coordinates movement- direction, time, force

maintain posture- balance

coordinate voluntary movement

motor learning

corrects all movement by feedback

Question 4

functional areas of the cerebellum

Answer 4

spinocerebellum (vernis)

vestibulocerebellum (flucculonodular)

cerebrocerrebellum ( lateral hemisphere)

Question 5

spinocerebelum

Answer 5

anticapotry, correctuve, responsive adjustments = coordinates

postural movement

Question 6

vestibulocerebelllum

Answer 6

coordinates head and back muscle tones for posture

CN 8

Question 7

cerebrocerebellum

Answer 7

timing plan movement
coordinate voluntary movement
fine/ distal movement

Question 8

dysfunction

Answer 8

ataxia- without coordination, posture balance impaxt, dysmerria, active tremor

To differentiate between somatosensory and cerebellar ataxia,
movement coordination should be compared with eyes open and eyes
closed
- Cerebellar lesions cause ataxia regardless of the use of vision

Question 9

dysfunction to functional areas

Answer 9

Vestibulocerebellum= Unsteadiness
truncal ataxia
nystagmus

Spinocerebellum= Intention tremor
ataxic gait
dysarthria
dysdiadochokinesia
dysmetria
movement decomposition

cerebro- Finger ataxia
Dysarthria

Question 10

FLOCCUNOBULAR

Answer 10

connection between the two hemispheres of the cerebellum

Question 11

cerebellar peduncle

Answer 11

communicates from cerebellum and brainstem

Question 12

dysathria

Answer 12

problems speaking
cerebrocerebellar

Question 13

dysmetria

Answer 13

always moving fast
either under reach or over reach

Question 14

dysdiadochokinesia

Answer 14

restriction in control of movement

Question 15

what region is affect in gait ataxia

Answer 15

spinocerebellum

if left is affected will tumble towards the left side

Question 16

what region is affected in dysmetria

Answer 16

spinocerebellum

Question 17

dysathria region is affected

Answer 17

cerebrocerebellum -
spinocerebellum- proprioception information