Neuro 15 Cerebellum

Front 1

where do lesions cause unsteady gait (truncal ataxia) and eye movement abnormalities, often accompanied by intense vertigo, nausea, and vomiting

Back 1

cerebellar vermis or flocculonodular lobes

Front 2

flocculonodular lobes are important in

Back 2

vestibulo-oculo control

Front 3

intermediate part of cerebellar hemisphere is involved in

Back 3

control of appendicular muscles in the arms and legs

Front 4

interposed nuclei

Back 4

emboliform and globose

Front 5

interposed nuclei receive input from

Back 5

intermediate part of the cerebellar hemispheres

Front 6

fastigial nuclei receive input from

Back 6

vermis

Front 7

cerebellar lesions cause deficits in coordination _____ to the lesion

Back 7

ipsilateral

Front 8

lesions of the cerebellar vermis cause _____ deficits of the proximal trunk muscles

Back 8

bilateral

Front 9

PICA arises from

Back 9

vertebral a.

Front 10

AICA arises from

Back 10

lower basilar a.

Front 11

SCA (superior cerebellar artery) arises from

Back 11

top of basilar a.

Front 12

blood supply to the lateral medulla, most of the inferior half of the cerebellum, and the inferior vermis

Back 12

PICA

Front 13

blood supply to the inferior lateral pons, middle cerebellar peduncle, middle anterior cerebellum, and flocculus

Back 13

AICA

Front 14

blood supply to the upper lateral pons, superior cerebellar peduncle, most of the superior half of the cerebellar hemisphere, including the deep cerebellar nuclei, and the superior vermis

Back 14

SCA

Front 15

patients with cerebellar infarcts typically present w/

Back 15

vertigo, nausea and vomiting, horizontal nystagmus, limb ataxia, unsteady gait, and HA (occipital, frontal, or upper cervical)

Front 16

why can infarction of the lateral medulla or pons cause ataxia?

Back 16

involvement of the cerebellar peduncles

Front 17

infarct of what artery would cause ipsilateral ataxia with little or no brainstem signs

Back 17

SCA

Front 18

infarct of what arteries cause swelling of the cerebellum, which blocks the 4th ventricle and causes hydrocephalus

Back 18

PICA or SCA

Front 19

"lack of order"

Back 19

ataxia

Front 20

abnormal timing of movements

Back 20

dysrhythmia

Front 21

abnormal undershoot or overshoot during movements toward a target

Back 21

dysmetria

Front 22

lesions of the cerebellar hemispheres or peduncles cause appendicular ataxia _____ to the side of the lesion

Back 22

ipsilateral

Front 23

lesions of the cerebellar vermis cause _____ ataxia

Back 23

truncal (bilateral)

Front 24

sensory ataxia results from lesion to

Back 24

posterior column-medial lemniscal pathway resulting in loss of joint position sense

Front 25

ataxia that is worse when the eyes are closed or in the dark

Back 25

sensory

Front 26

abnormalities of rapid alternating movements, such as alternately tapping one hand with the palm and dorsum of the other hand

Back 26

dysdiadochokinesia

Front 27

tremor of the trunk or head

Back 27

titubation

Front 28

what causes normal suppression of the vestibulo-ocular reflex to be impaired

Back 28

lesion to flocculonodular lobe

Front 29

what would a lesion to the left superior, middle, or inferior cerebellar peduncle cause

Back 29

left appendicular ataxia and truncal ataxia

Front 30

what structures pass by the spinal trigeminal nucleus that could explain both sensory loss to the face and ataxia?

Back 30

middle and inferior cerebellar peduncles