E3 cerebellum

Question 1

primary fissure

Answer 1

separates anterior and posterior lobes

Question 2

posterolateral fissure

Answer 2

separates posterior and floculonodular lobes

Question 3

floculonosudlar lobe

Answer 3

balance and eye movements

Question 4

3 layers

Answer 4

molecular
purkinje
granule

Question 5

3 nuclei

Answer 5

fastigial
interposed
dentate

Question 6

inhibitory cells

Answer 6

basket, golgi, stellate purkinje

Question 7

excitatory cell

Answer 7

granule

Question 8

molecular layer

Answer 8

basket and stellate cells
dendirtes of purkinje
climbing fibers

Question 9

purkinje layer

Answer 9

cell bodies of only output

Question 10

granule

Answer 10

golgi and granule cells

mossy fibers

Question 11

climbing fibers

Answer 11

from inferior olive via ICP
excite deep nuclei and purkinje cells
1 collateral per purkinje
1-10 collaterals
function=motor adaptaion and motor learnign

Question 12

mossy fibers

Answer 12

inform cerebellum about planned and ongoing movements
from spinal cord and brainstem
to deep nuclei and granule cells

Question 13

parallel fibers

Answer 13

from granule cells (activated by mossy fibers)
to purkinje dendrites
excitatory

Question 14

simple cerebellum circuit

Answer 14

intended and ongoing info in via mossy and climbing fibers to cerebellar cortex and deep neurons
differences between planned and actual analyzed and adjuted and sent out thorugh purkinje fibers

Question 15

somatotopy of cerebellum

Answer 15

head neck trunk in vermis
sent down to fastigial nuclei
arms and legs laterally in paravermis and lateral hemispheres
to interposed and dentate
dual reps in anteror and posterior lobes

Question 16

medial zone

Answer 16

flocculonodular lobe and vermis
regulate fastigial and lateral vestibular nuclei
for balance, eye movement, postures, locomotion and trunk

Question 17

lateral zone

Answer 17

paravermis and cerebral hemispheres
regulate interposed and dentate nuclie
distal muscles and motor planning

Question 18

5 inputs to medial zone

Answer 18

corticopontien
spinall/trigeminal
vestibular
reticular
inferior olive
all go to vermis and flocculonodular lobe

Question 19

corticopontine input

Answer 19

to medial zone -  lower body
to lateral zone - upper body
motor command from cortex
to pontine nuclei 
crosses at decussation of transverse pontine fibers
enter through MCP

Question 20

spinal and trigeminal input

Answer 20

to medial zone and lateral zone
DSCT - lower body proprioception
cuneocerebllar tract - upper body proprioception
trigeminocerebellar tract - info from face
all come in through ICP ipsilaterally

Question 21

VSCT

Answer 21

efferent copies from spinal cord
cross at ventral white commissure
cross again at SCP
to Medial zone and lateral zone

Question 22

vestibular cerebellar tract

Answer 22

balance
ipsilateral ICP
to medial zone

Question 23

reticulocerebellar tract

Answer 23

cutaneous
ispsi ICP
to medial zone and lateral zone

Question 24

olivocerebellar tract

Answer 24

timing and motor learnig
from inferior olive
cross before ICP so contra
to medial zone and lateral zone

Question 25

medial and lateral zone outputs

Answer 25

shoudl just draw it

Question 26

medial zone and ICP lesions

Answer 26

``` bilatearl deficits truncal ataxia wide drunk gait vertigo and nystagmus ICP=hypertonicity dysarthria (slurred speech) ```

Question 27

lesion of lateral sone and SCP

Answer 27

``` hypotonia initiation delays difficulty wiht multijoint movements dysmetria intention tremor dysdiadochokinesia ```