cerebellum

Question 1

what are the main functions of the cerebellum

Answer 1

• walking and balance
• coordination of movements
• precision and accuracy of movement
• motor learning
• reflex modification

Question 2

how do the cerebellum and the brainstem communicate

Answer 2

via superior , middle, and
inferior cerebellar peduncles

Question 3

what are the longitundinal divisions of the cerebellum

Answer 3

vermis
paravermal region
cerebellar hemispheres

Question 4

what are the transverse divisions of the cerebellum

Answer 4

anterior lobe (primary fissure)
posterior lobe (posterolateral fissure)
flocculonodular lobe

Question 5

what does the superior peduncle connect to

Answer 5

–superior pons/ midbrain

Question 6

what does the middle peduncle connect to

Answer 6

pons

Question 7

what does the inferior peduncle connect to

Answer 7

medulla

Question 8

are the peduncles efferent or afferent

Answer 8

superior - efferent projections
middle - afferent projections
inferior - afferent and efferent projections

Question 9

what separates the posterior lobe from the anterior

Answer 9

the primary fissure

Question 10

what fissure separates lobes I- III and lobe IV

Answer 10

preculminate fissure

Question 11

what fissure separates lobe IV and lobe V

Answer 11

intraculminate fissure

Question 12

what fissure separates lobe V and VI

Answer 12

primary fissure

Question 13

what fissure separates lobe VI and VIIA Crus I

Answer 13

superior posterior fissure

Question 14

what fissure separates lobe VIIA Crus I and VIIA Crus II

Answer 14

the horizontal fissure

Question 15

what fissure separates lobe VIIA Crus II and lobe VIIB

Answer 15

ansoparamedian fissure

Question 16

what fissure separates lobe VIIB and VIIIA

Answer 16

prepyramidal fissure

Question 17

what fissure separates lobe VIIIA and VIIIB

Answer 17

intrabiventral fissure

Question 18

what fissure separates lobe VIIIB and lobe IX

Answer 18

secondary fissure

Question 19

what are the 4 nuclei of the cerebellum

Answer 19

denate, emboliform, globose, fastigial

Question 20

where is the dentate nucleus

Answer 20

cerebellar hemisphere

Question 21

where is the emboliform nucleus

Answer 21

paramedian zone

Question 22

where is the globose nucleus

Answer 22

paramedian zone

Question 23

where is the fastigial nucleus

Answer 23

vermis

Question 24

what are the interposed nuclei

Answer 24

emboliform and globose nuclei

Question 25

what are the 3 layers of the cerebellar cortex

Answer 25

1. molecular 2. purkinje 3. granule

Question 26

what are the 5 cell types in the cerebellar cortex

Answer 26

purkinje (efferents) granule (target of mossy) stellate basket golgi

Question 27

what does the stellate cells inhibit

Answer 27

inhibit nearby Purkinje

Question 28

what does the basket cells inhibit

Answer 28

inhibit distant Purkinje

Question 29

what does the golgi cells inhibit

Answer 29

inhibit Granule cells

Question 30

what two types of fibers are in the cerebellar cortex

Answer 30

mossy fiber and climbing fiber

Question 31

what are the functional divisions of the cerebellum

Answer 31

vestibulocerebellum spinocerebellum cerebrocerebellum

Question 32

what is the function of the Vestibulocerebellum

Answer 32

Regulates balance and reflex eye movements

Question 33

what is the function of the Spinocerebellum

Answer 33

Adjust ongoing movements and controls muscle tone – Stance and gait

Question 34

what is the function of the Cerebrocerebellum

Answer 34

Planning and initiation of skilled movements, smooth and precise control

Question 35

describe the projections to the cerebellum

Answer 35

frontal and parietal cortices --> pons --> middle cerebellar peduncle --> cerebellar cortex vestibular nuclei, reticular nuclei, inferior olives, spinal cord --> inferior cerebellar peduncle --> cerebellar cortex

Question 36

describe projections from the cerebellum

Answer 36

cerebellar cortex --> fastigial nucleu --> inferior cerebellar peduncle --> vestibular nuclei cerebella cortex --> globose nuclei, emboliform nuclei, dentate nuclei --> superior cerebellar peduncle --> red nuclei/thalamus --> primary and premotor cortex

Question 37

what is the primary OUTPUT pathway from the deep cerebellar nuclei

Answer 37

The superior cerebellar peduncle

Question 38

what are some cerebellar dysfunctions

Answer 38

dysmetria truncal ataxia intention tremor

Question 39

what separates the posterior lobe from the flocculonodular lobe

Answer 39

Posterolateral fissure

Question 40

which lobes are anterior

Answer 40

I - V

Question 41

which lobes are superior posterior

Answer 41

VI VIIA Crus I and VIIA Crus II VII B

Question 42

which lobes are inferior posterior

Answer 42

VIIIA VIIIB IX

Question 43

which lobe is in the flocculonodular lobe

Answer 43

X