5. Incoordination & Other Disorders Of Cerebellar Function

Question 0

This is the portion of the corpus cerebelli rostral to the primary fissure

Answer 0

Anterior lobe/ paleocerebellum

Question 1

Part of the cerebellum located inferiorly, which is phylogenetically the oldest portion of the cerebellum & is much the same in all animals

Answer 1

Flocculonodular lobe/ archicerebellum

Question 2

This is the largest subdivision of the cerebellum

Answer 2

Posterior lobe/ neocerebellum

Question 3

Part of the cerebellum which receives special proprioceptive impulses from the vestibular nuclei & is concerned essentially with equilibrium

Answer 3

Vestibulocerebellum/ flocculonodular lobe

Question 4

The anterior & posterior part of the vermis whose main influence appears to be on posture & muscle tone

Answer 4

Spinocerebellum

Question 5

This portion of the cerebellum is concerned primarily with the coordination of skilled movements that are initiated at a cerebral cortical level

Answer 5

Pontocerebellum/ neocerebellum

Question 6

Cerebellar zone that coordinates movements of the eyes & body with respect to gravity & movement of the head in space

Answer 6

Vermian zone

Question 7

Cerebellar zone which receives both peripheral & central projections (from motor cortex), influences postural tone & also individual movements of the ipsilateral limbs

Answer 7

Intermediate zone

Question 8

Cerebellar zone concerned mainly with coordination of movements of the ipsilateral limbs but is also involved in other functions

Answer 8

Lateral zone

Question 9

Also known as the cerebellar-reticular-cerebellar feedback system

Answer 9

Mollaret triangle

Question 10

This deep cerebellar nucleus receives information from the premotor & supplementary motor cortices via the pontocerebellar system & helps to initiate volitional movements

Answer 10

Dentate nucleus

Question 11

This deep cerebellar nucleus receives spinocerebellar projections via the intermediate zone. These projections convey information from Golgi tendon organs, muscle spindles, cutaneous afferents, and spinal cord interneurons involved in movement

Answer 11

Interpositus nucleus

Question 12

This deep cerebellar nucleus appears to be responsible for making volitional oscillations (alternating movements)

Answer 12

Prepositus nucleus

Question 13

This deep cerebellar nucleus controls antigravity & other muscle synergies in standing & walking

Answer 13

Fastigial nucleus

Question 14

The only cell type of the cerebellar cortex which are excitatory

Answer 14

Granule cells

Question 15

These are the main afferent input into the cerebellum & utilize aspartate

Answer 15

Mossy fibers

Question 16

These are the axons of cells in the inferior olivary nucleus & project to the Purkinje cells of the opposite cerebellar hemisphere. The neurotransmitter of these fibers are unknown.

Answer 16

Climbing fibers

Question 17

These are fibers that project through the superior cerebellar peduncle & terminate on the Purkinje & granule cells in all parts of the cerebellar cortex

Answer 17

Aminergic fibers

Question 18

It is the least evident of cerebellar abnormalities, which refers to a decrease in normal resistance that is offered by muscles with passive manipulation

Answer 18

Hypotonia

Question 19

T/F: The Romberg sign is found in lesions of the cerebellar hemispheres.

Answer 19

False