Cerebellum part 2

Question 2

medial longitudinal fasiculus (MLF)

Answer 2

vestibular nucleus sends axons thru MLF to CN III, IV, VI

nuclei

Question 3

axons sent thru MLF to CN III, IV, VI

nuclei

Answer 3

bilateral in

Vestibulocerebellar System

Question 4

mooth pursuit

Answer 4

allows the eyes to follow a moving stimulus (maintains the stimulus on the fovea)

needs the cerebllum

Question 5

smooth pursuit

Cortical eye fields –>vest nuclei–> Cb –> vestibular nucleus –> CN III, IV, VI nuclei via the MLF

Answer 5

Cortical eye fields –> pontine nuclei –> Cb –> vestibular nucleus –> CN III, IV, VI nuclei via the MLF

Question 6

The cerebellum compares the—– ——with the intended movement and ——– the required corrections to maintain —— and proper eye position .

Answer 6

The cerebellum compares the vestibular input with the intended movement and “computes” the required corrections to maintain equilibrium and proper eye position .

Question 7

Generalized loss of equilibrium

Answer 7

Lesion of the Vestibulocerebellum

Question 8

Impaired ability to coordinating eye movements with head movements

Answer 8

Lesion of the Vestibulocerebellum

Question 9

Altered output along medial vestibulospinal tract – Altered output along MLF

Answer 9

Lesion of the Vestibulocerebellum

Question 10

Carries proprioceptive information trunk & LEs (T1 and below)

Answer 10

tPosterior Spinocerebellar Tract

Question 11

tCuneocerebellar Tract

Answer 11

Carries proprioceptive information neck & UEs (rostral to T1)

Question 12

Anterior Spinocerebellar Tract

Answer 12

proprioceptive information and cutaneous information

from receptors with large receptive fields from LEs

Question 13

Carries proprioceptive information from the oral cavity

Answer 13

Trigeminocerebellar Tract

Question 14

Propriceptive afferents travel in dorsal column

of Posterior Spinocerebellar Tract and travel to

Answer 14

Clarke’ s Column T1 - L2

Question 15

Axons travel superiorly within the

Answer 15

posterior spinocerebellar tract

Question 17

Posterior spinocerebellar tract travels thru

Answer 17

Inferior cerebellar peduncle

Question 18

tf Posterior Spinocerebellar Tract only travel to vermis

Answer 18

F vermis and paravermis

Question 19

TF Cuneocerebellar Tract

Axons travel in the dorsal column (fasciculus cuneatus) to med/ internal/ accessory cuneate nucleus

Answer 19

Cuneocerebellar Tract

Axons travel in the dorsal column (fasciculus cuneatus) to Lateral/ external/ accessory cuneate nucleus

Question 20

TF Cuneocerebellar Tract uses Clarke’s Column T1 - L2

Answer 20

F

Question 21

propriceptive afferents from C1-C8

Answer 21

Cuneocerebellar Tract

Question 22

Ipsilateral

Answer 22

Cuneocerebellar Tract

Posterior Spinocerebellar Tract

Question 23

travels contralat then contralat back to same side

(after ascending)

Answer 23

Anterior Spinocerebellar Tract

Question 24

Superior cerebellar peduncle

Answer 24

Anterior Spinocerebellar Tract

fibers

Question 25

both use Inferior cerebellar peduncle

Answer 25

Cuneocerebellar Tract

Posterior Spinocerebellar Tract

Question 26

Primary afferents synapse on spinal border cells (T2-L5)

Answer 26

Anterior Spinocerebellar Tract

Question 27

Trigeminocerebellar Tract

Answer 27

Proprioceptive info carried along branches of CN-V (ie. muscles of mastication, periodontal ligament)

Question 28

Proprioceptive info carried along branches of CN-V (ie. muscles of mastication, periodontal ligament) carried to trigerm. cerebellar tract

Answer 28

spinal trigeminal nucleus.

Question 29

Axons from the spinal trigeminal nucleus project to the cerebellum trigem cereblar tract

Answer 29

via the inferior cerebellar peduncle.

Question 30

trigeminoceebellar tract cerebellum influences motor output by projecting to the

Answer 30

trigeminal motor nucleus.

Question 31

This circuit allow the oral motor system to receive ------ --------- during mastication trgemcerebellar tract

Answer 31

This circuit allow the oral motor system to receive continual feedback during mastication

Question 32

The cerebellum monitors the ------ ------- on muscles of mastication and influences ------ output accordingly. trigem. cerebllar tract

Answer 32

The cerebellum monitors the changing demands on muscles of mastication and influences motor output accordingly.

Question 33

(ant post)Spinocerebellar and Trigeminocerebellar Tract functions

Answer 33

After processing proprioceptive information in cerebellum , cerebellar efferents project to motor regions, either directly or indirectly via the thalamus. allows for adjustment of movement during ongoing movement

Question 34

Functions Spinocerebellar and Trigeminocerebellar Tracts

Answer 34

The cerebellum compares the intended movement with the actual movement and “computes” the required corrections. Efferent projections from the cerebellum corrects the movement

Question 35

Corticospinal tract and Rubrospinal tract

Answer 35

act modulate motor output in the Spinocerebellar System in the Proprioceptive afferents responce

Question 36

synapse in red nucleus

Answer 36

Rubrospinal tract efferent responce

Question 37

contralateral to the skeletal muscle

Answer 37

Corticospinal tract and Rubrospinal tract (Spinocerebellar System afferent responce)

Question 38

Impaired ability to control axial muscles/ impaired trunk control

Answer 38

Lesion of the Spinocerebellum

Question 39

Altered rate, range, accuracy of limb movements

Answer 39

Lesion of the Spinocerebellum

Question 40

Dysmetria (overshooting a target)

Answer 40

lead to Intention Tremor in Lesion of the Spinocerebellum and inLesion to the Cerebrocerebellum

Question 41

Dysmetria

Answer 41

Rely on the feed-back

Question 43

inf olive role in cerebrocellebellar tract

Answer 43

recieves input from dentate(from cerebellar hemisphere) then has to correct and send climbing fibers to lat hemisphere of cerebellum

Question 44

Receives extensive input from the cerebral cortex (via pontine nuclei)

Answer 44

cerebellum in the Cerebrocerebellar System

Question 45

Involved in the planning, initiation, timing and control of motor movements.

Answer 45

cerebellum

Question 46

VA/VL

Answer 46

recieves neurons from dentate and sends neurons to motor cortex to modulate activity

Question 47

Pontine nuclei

Answer 47

recieves infor fromcerebral cortex and sends info to lateral hemishphere of Cerebelum

Question 48

climbing fibers

Answer 48

goes thru Inferior cerebellar peduncle to cerebellum(lat hemisphere)

Question 49

Middle cerebellar peduncle

Answer 49

carries axons from pontne nucleus to lat cerebellum

Question 50

contralat

Answer 50

Corticospinal and Rubrospinal Tracts

Question 51

The cerebellar hemisphere compares the ---- movement with the ----- movement and “computes” the required corrections for the next time the task is performed.

Answer 51

The cerebellar hemisphere compares the intended movement with the actual movement and “computes” the required corrections for the next time the task is performed.

Question 52

------ projections from the cerebellum corrects the movement via the ----- tract.

Answer 52

Efferent projections from the cerebellum corrects the movement via the corticospinal tract.

Question 53

Studies on non-human primates reversible cooling in the ----- nucleus resulted in delayed ----- of movement.

Answer 53

reversible cooling in the dentate nucleus resulted in delayed onset/initiation of movement. Lesion to the Cerebrocerebellum

Question 54

Movement takes place ----- rather than being coordinated smoothly

Answer 54

Lesion to the Cerebrocerebellum

Question 55

Impaired ability to plan motor movement

Answer 55

seen with inactivating the interposed [globos/emboliform] in monkeys Lesion to the Cerebrocerebellum