extrapyramidal tract and cerebellum

Question 1

rubrospinal tract

Answer 1

n: red nucleus
f: facilitatory influence over flexor muscle tone

Question 2

tectospinal tract

Answer 2

n:deep part superior colliculus
f: postural movements in response to visual and auditory stimuli

Question 3

lateral vestibulospinal

Answer 3

n:lateral vestibular nucleus
f: facilitatory over extensor muscles

Question 4

medial vestibulospinal

Answer 4

n:medial vestibular nucleus
f: innervates neck muscles

Question 5

pontine rericulospinal

Answer 5

n: pontine reticular formation
f: stimulates flexors and extensors

Question 6

medullary reticulospinal

Answer 6

n:medullary reticular formation
f: inhibits extensor neurons

Question 7

for posture and equilibrium

Answer 7

-rubrospinal-tone and posture
-tectospinal-visuospinal reflex
-vestibulospinal-equilibrium

Question 8

to maintain muscle tone

Answer 8

reticulospinal tract- tonic inhibitory ctrl on gamma motor neurons

Question 9

representation in cerebellum

Answer 9

ant lobe- ipsilateral and inverted
post.lobe- bilateral and intact

Question 10

dentate nucleus

Answer 10

afferent:neocerebellum
efferent: red nucleus and ventrolateral nucleus of thalamus which projects to B4,6

Question 11

Which cell of cerebellar cortec in excitatory

Answer 11

Granule cells-Glutamate
-all other cells release GABA

Question 12

afferent tracts of mossy fiber

Answer 12

1)vestibulocerebellar
2)dorsal spinocerebellar
3)ventral spinocerebellar
4) cuneocerebellar
5) tectocerebellar
6)pontocerebellar

Question 13

vestibulocerebellar

Answer 13

transmits impulses fr labyrinths via vestibular nuclei

Question 14

dorsal spinocerebellar

Answer 14

transmits proprioceptive impulses fr lower limb and trunk

Question 15

ventral spinocerebellar

Answer 15

transmits proprioceptive impulses fr upper and lower limbs

Question 16

cuneocerebellar

Answer 16

transmits proprioceptive impulses fr upper limb and thorax

Question 17

tectocerebellar

Answer 17

transmit auditory and visual impulses

Question 18

pontocerebellar

Answer 18

transmits impulses fr motor and other part cerebral cortex

Question 19

afferent fr climbing fiber

Answer 19

olivocerebellar- transmits proprioceptive input fr whole body via relay in inferior olive

Question 20

efferents of cerebellum

Answer 20

dentatorubral
dento-rubro-thalamo-cortical
cerebelloreticular
cerebellovestibular
cerebello-olivary fibres