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Flashcards in Cerebellum Deck (20):
0

3 primary functions of cerebellum

1. Sequence events associated w/ given motor response
2. Maintain upright posture
3. Maintain muscle tone

1

Fibers entering cerebellum through inferior cerebellar peduncle (5)

Dorsal spinocerebellar fibers (ipsi)
Cuneocerebellar fibers (ipsi)
Olivocerebellar fibers (contra)
Vestibulocerebellar fibers (ipsi)
Reticulocerebellar fibers (ipsi)

2

Only climbing fibers

Olivocerebellar fibers (contra)

3

Fibers entering cerebellum through middle cerebellar peduncle

Pontocerebellar fibers (contra)

4

Fibers entering cerebellum through superior cerebellar peduncle

Ventral spinocerebellar fibers (ipsi)

5

Deep cerebellar nuclei (4)

Dentate
Emboliform
Globose
Fastigial

"Don't Eat Greasy Food" lateral --> medial

6

____ projects to (ipsi/contralateral) vestibular and reticular nuclei

Fastigial nucleus
Ipsilateral

7

____ projects to (ipsi/contralateral) red nucleus

Interposed nuclei = globose + emboliform nucleus
Contralateral

8

____ projects to (ipsi/contralateral) ventral lateral nucleus of thalamus

Dentate nucleus
Contralateral

9

Midline lesion of cerebellum will cause ____

truncal ataxia

10

All cerebellar syndromes cause (ipsi/contralateral) signs.

Ipsilateral

11

Paravermal lesions to cerebellum will cause ___

Limb ataxia

12

Hemisphere lesions will cause ____

deficits in speech, learning, detecting eros in performance

13

Flocculonodular lesions will cause ____

deficits in visual tracking and oculomotor control
Integration of vestibular information for eye and head position
Control of axial muscles for balance

14

Midline cerebellar syndrome signs (2)

Truncal ataxia: drunken sailor gait
Nystagmus

15

Paravermal cerebellar lesions (8)

Limb ataxia
Volitional tremor: course tremor during moving
Dysmetria: inability to estimate range of movement
Dyssynergia: uneven and jerky movement
Adiadochokinesia: inability to perform rapid successive movements
Muscular hypotonia
Dysarthria: slurred speech
Nystagmus

16

Functions of vermis and paravermis (2)

Muscle tone, posture
Execution of trunk and limb movements

17

Functions of lateral hemispheres

Planning
Initiation
Timing of movements
Memory, language

18

Flocculonodular lobe functions

Balance
Eye movements

19

Axons in the superior cerebellar peduncle arising from deep cerebellar nuclei form ____tract

dentato-rubro-thalamic