Cerebellum

Question 1

cerebellum are connected by

Answer 1

cerebellar peducles

Question 2

inferior cerebellum is found in the ______ and mostly contains ____ to cerebellum

Answer 2

found in the medulla and mostly contains inputs to cerebellum

Question 3

Middle cerebellum found in ______

`and contains only ____ to cerebellum

Answer 3

found in pons and only input to cerebellum

Question 4

superior cerebellum found in ______ and contains mostly _____ from cerebellum

Answer 4

found in midbrain and mostly contain output from cerebellum

Question 5

lesions in cerebellar leads to

Answer 5

ipsilateral deficits

Question 6

does the cerebellum contain more neurons than the cerebral cortex?

Answer 6

heck yea

Question 7

what is vulnerable for occlusion?

Answer 7

4th ventricle

Question 8

Mollaret’s triangle

Answer 8

is a sel-contained circuit involving the inferior olive, dentate and red nucleus

Question 9

climbing fibers from the inferior olive go where?

Answer 9

direct to the purkinje fibers

Question 10

what is the order in which cells receives the input in the cerebellum?

Answer 10

internal granular (packed with cells) —> Molecular —>Purkinje

Question 11

most incoming fibers synapse on

Answer 11

granular cell dendrites

Question 12

what are the deep cerebellar nuclei?

Answer 12

output nuclei

Question 13

vermis involved with

Answer 13

trunkal control

Question 14

flocculondular lobe?

Answer 14

vestibulocerebellum

Question 15

vestibulocerebellum receives input t (and its output is to) ________ and when lesioned it affects

Answer 15

input from vestibular nuclei and when lesioned it affects balance and gait ataxia

Question 16

spinocerebellum receives input (and its output is to) _______from and when lesioned it affects

Answer 16

receives input from spinocerebellar tract and olives and when lesioned it affects trunkal coordination

Question 17

Neocerebellum input is from _______ and output is ________

Answer 17

input: cortex via pontine nuclei
output: back to cortex via VL of thalamus

Question 18

neocerebellum lesioned affect

Answer 18

upper extremities dyscoordination

Question 19

vascular syndrome  of the cerebellum that are caused by"
- hemorrhage/infarct
-toxic exposure
- heat stroke
anoxia

Answer 19

acute cerebellar disease

Question 20

Subacute cerebellar disease:

• alcoholic–>
• Praneoplastic –>
• Cerebellar tumors –>
• MS –>

Answer 20

• alcoholic–> vermis
• Praneoplastic –> antibodies vs. purkinje cells leading to cerebellar ataxia
• Cerebellar tumors –> occlusion of the 4th ventricle
• MS –> cerebellum white fibers

Question 21

inherent disease of the cerebellum that can be caused by:

• congenital cerebellar hypoplasia
• genetic disorders like spinocerebellar ataxia
• neurodegenerative like olivopontocerebellar degeneration that has parkisonian like features
• metabolic diseases

Answer 21

chronic cerebellar disease

Question 22

How does the cerebellum differ in its representation of the body?

Answer 22

ipsilateral strcuture

Question 23

what does this mean for input and output?

Answer 23

remains ipsilateral or crosses twice

Question 24

what is carried in each peduncle?

superior:

middle:

inferior:

Answer 24

superior: output
middle: cortico-ponto-cerebellar fibers
inferior: spinocerebellar, vestibulocerebellar

Question 25

How is the cerebellar cortex organized?

Answer 25

input to granular, synapse on purkinje cell in molecular Purkinje cell to deep nuclei

Question 26

what are the functional divisions?

Answer 26

lateral, vermis and paravermis, flocculonodular

Question 27

Clinical symptoms of cerebellum issues

Answer 27

- nystagmus - incoordination, intention tremor - dysdiadochokinesis - hypotonia- flaccid tone

Question 28

dysdiadochokinesis

Answer 28

rapid, altering movements

Question 29

lesion within the mollaret's triangle

Answer 29

palatal myoclonus