Trans - Cerebellum

Question 1

% of neurons found in cerebellum

Answer 1

50

Question 2

the cerebellum is __ % of the total brain space

Answer 2

10

Question 3

embryonic precursor of cerebellum

Answer 3

metencephalon

Question 4

gyri:cerebrum :: ____:cerebellum

Answer 4

folia

Question 5

another name for the white matter in the cerebellum

Answer 5

arbor vitae

Question 6

clinical significance of cerebellar tonsil

Answer 6

may compress medulla in certain pathologies

Question 7

wormlike structure in cerebellar midline

Answer 7

vermis

Question 8

divides the cerebellum into hemispheres

Answer 8

vermis

Question 9

separates the cerebellar anterior lobe from the posterior lobe

Answer 9

primary fissure

Question 10

cerebellum is located in what compartment of the skull

Answer 10

posterior cranial fossa

Question 11

structure separating cerebrum from cerebellum

Answer 11

tentorium cerebelli

Question 12

archicerebellum - components

Answer 12

flocculus and nodulus

Question 13

archicerebellum - function

Answer 13

coordination of neck, trunk, eyes

Question 14

spinocerebellum - components

Answer 14

anterior cerebellar hemispheres

Question 15

spinocerebellum - function

Answer 15

limb coordination

Question 16

neocerebellum - components

Answer 16

posterior cerebellar hemispheres

Question 17

neocerebellum - function

Answer 17

fine movement coordination

Question 18

cerebellum arose from which nuclei

Answer 18

vestibular nuclei

Question 19

3 microscopic layers of cerebellum

Answer 19

1. molecular layer
2. Purkinjie cell layer
3. granular layer

Question 20

cells in molecular layer

Answer 20

1. stellate cell

2. basket cell

Question 21

difference of stellate and basket cells

Answer 21

stellate cells use taurine and synapse with dendrites of Purkinjie cells

basket cells use GABA and synapse with Purkinjie cell soma

Question 22

Purkinjie cells in cerebellum - function

Answer 22

primary integrative cells of cerebellum

Question 23

output cells of cerebellum

Answer 23

Purkinjie cells

Question 24

granule cells receive input through what type of fiber

Answer 24

mossy fibers

Question 25

Purkinjie cells recieve input through what type of fiber

Answer 25

climbing fibers

Question 26

in what layer are Golgi cells found

Answer 26

granular cell layer

Question 27

Golgi cells - function

Answer 27

GABA inhibitory to granular cells

Question 28

which is the thinnest layer?

Answer 28

Purkinjie cell layer

Question 29

which is the thickest layer?

Answer 29

granular cell layer

Question 30

Purkinjie cells recieve input from what region

Answer 30

from contralateral inferior olivary nucleus through climbing fibers

Question 31

granule cells - function

Answer 31

back and forth feedback with Purkinjie cells

Question 32

4 cerebellar nuclei

Answer 32

1. dentate 2. emboliform 3. globose 4. fastigial

Question 33

most prominent nuclei

Answer 33

dentate

Question 34

most primitive nuclei

Answer 34

fastigial

Question 35

nucleus interpositus - components

Answer 35

emboliform and globose nuclei

Question 36

more lateral component of nucleus interpositus

Answer 36

emboliform

Question 37

more medial component of nucleus interpositus

Answer 37

globose

Question 38

sole output track of cerebellum

Answer 38

dentate nucleus

Question 39

most medial nucleus

Answer 39

fastigial

Question 40

most lateral nucleus

Answer 40

dentate

Question 41

which fibers do not pass through the four nuclei? where do they go?

Answer 41

fibers from flocculonodular lobe pass directly to fastigial nucleus and from there are routed to vestibular nuclei

Question 42

cerebellar division connecting directly to vestibular nuclei

Answer 42

archicerebellum

Question 43

cerebellar division that does not connect directly to vestibular nuclei

Answer 43

spinocerebellum and neocerebellum

Question 44

where is the restiform body located

Answer 44

inferior cerebellar peduncle

Question 45

what is another name for the middle cerebellar peduncle

Answer 45

brachium pontis

Question 46

what is another name for the superior cerebellar peduncle

Answer 46

brachium conjunctivum

Question 47

superior cerebellar peduncle - type of signal carried, where is it from and where is it going

Answer 47

efferent fibers from cerebellum to thalamus or red nuclei

Question 48

middle cerebellar peduncle - type of signal carried, where is it from, where is it going

Answer 48

afferent fibers from cerebal cortex, basal nuclei, and pons, to cerebellum

Question 49

inferior cerebellar peduncle - type of signal carried, where is it from, where is it going

Answer 49

afferent fibers from spinal cord and brainstem to cerebellum

Question 50

a given cerebral hemisphere influences which side of the body relative to it?

Answer 50

contralateral

Question 51

a given cerebellar hemisphere influences which side of the body relative to it?

Answer 51

ipsilateral

Question 52

mossy fibers - special features

Answer 52

synapse with granule cell dendrites, providing an indirect link to Purkinjie cells

Question 53

climbing fibers - special features

Answer 53

wind around Purkinjie cell dendrite, creating many synapses for extremely powerful excitatory response

Question 54

why do cerebellar hemispheres affect the ipsilateral side of the body

Answer 54

due to double decussation

Question 55

cerebellar pathway (cortex to spinal cord via cerebellum)

Answer 55

cerebral cortex --> pons --> cerebellar white matter --> dentate nucleus --> red nuclei --> thalamus --> cerebral cortex --> spinal cord

Question 56

how many decussations occur in the cerebellar pathway? where?

Answer 56

2 decussations 1. from the pons to the cerebellar white matter in the contralateral hemisphere 2. from the dentate nucleus to the contralateral red nucleus

Question 57

inferior border of posterior cerebellar lobe

Answer 57

posterolateral fissure

Question 58

full name of cerebellar tract (from cortex to spinal cord via cerebellum)

Answer 58

cortico-ponto-cerebello-dentato-rubro-thalamo-cortico-spinal tract

Question 59

middle cerebral peduncle - what tracts pass through

Answer 59

cortico-ponto-cerebellar tract

Question 60

superior cerebellar peduncle - what tracts pass through

Answer 60

1. dentato-rubro-thalamo-cortical tract | 2. cerebello-thalamo-cortical tract

Question 61

function of cerebellum

Answer 61

coordination of movement