DISORDERS OF THE CEREBELLUM Flashcards

0
Q

The spinocerebellum is consist of the following EXCEPT:

A. Uvula
B. Anterior lobe of the vermis
C. Pyramids
D. Middle portion of the vermis

A

D. Middle portion of the vermis

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1
Q

Controls muscle tone and axial and limb movements.

A. Paleocerebellum
B. Archicerebellum
C. Neocerebellum
D. Vestibulocerebellum

A

A. Paleocerebellum

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2
Q

Planning and initiation of movements as well as regulation of fine limb movements.

A. Archicerebellum
B. Neocerebellum
C. Spinocerebellum
D. Vestibulocerebellum

A

B. Neocerebellum

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3
Q

The archicerebellum plays a role in the ______________.

A. Eye movements
B. Control of muscle tone
C. Body equilibrium
D. Both A and C

A

D. Both A and C

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4
Q

Output of the cerebellum.

A

Purkinje cell

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5
Q

Main neurotransmitter of cerebellum.

A

Y-ABA

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6
Q

From lateral to medial.

A. Emboliform, Globose, Fastigial, Dentate
B. Dentate, Emboliform, Globose, Fastigial
C. Fastigial, Globose, Emboliform, Dentate
D. Dentate, Fastigial, Globose, Emboliform

A

B. Dentate, Emboliform, Globose, Fastigial

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7
Q

Afferent fibers form the greater part of the white matter proceed to the cerebellar cortex; enter through the _________ and ___________ cerebellar peduncles.

A. Inferior, Superior
B. Inferior, Middle
C. Middle, Superior
D. All of the choices are correct.

A

B. Inferior, Middle

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8
Q

Also known as the brachium pontis.

A

Middle cerebellar peduncle

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9
Q

Connects the body to the medulla oblongata. Also known as the restiform body.

A

Inferior cerebellar peduncle

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10
Q

The following are afferent tracts of the inferior cerebellar peduncle EXCEPT:

A. Arcuatocerebellar
B. Dorsal spinocerebellar
C. Ventral spinocerebellar
D. Olivocerebellar

A

C. Ventral spinocerebellar

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11
Q

Fibers from the pontocerebellar tract go through ___________ as its afferent tracts.

A. Superior cerebellar peduncle
B. Inferior cerebellar peduncle
C. Middle cerebellar peduncle
D. None of the above.

A

C. Middle cerebellar peduncle

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12
Q

The following are efferent tracts of the superior cerebellar peduncle EXCEPT:

A. Dentatorubral
B. Dentatothalamic
C. Fastigiobulbar
D. Uncinate bundle of Russell

A

C. Fastigiobulbar

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13
Q

Incoordination of volitional movement.

A

Ataxia

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14
Q

Lack of synergy of the various muscle components. Characterized by disjointed and clumsy movemenys.

A

Asynergia

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15
Q

Abnormalities in the rate, range, and force of movement.

A

Dysmteria

16
Q

Inability to do rapid alternating movements.

A

Dysdiadochokinesia

17
Q

Depression of the gamma and alpha motor neurons activity and the LEAST evident of the cerebellar abnormalities.

A

Hypotonia

18
Q

TRUE or FALSE: Hypotonia is more apparent with acute than chronic lesions.

A

TRUE

19
Q

Overshooting the target.

A

Hypermetria

20
Q

Variable intonation and abnormalities in articulation

A

Scanning dysarthia

21
Q

Nystagmus characterized by lesions on the uvula and nodulus.

A

Periodic alternating nystagmus

22
Q

Posterior midline lesions causes this type of nystagmus.

A

Downbeat nystagmus

23
Q

The following are manifestations of disorders of equilibrium and gait of cerebellar lesions EXCEPT:

A. Impaired tandem walking
B. It is possible to stand with feet together.
C. Wide-based stance with increased trunk sway
D. Uneven and misaligned foot placement when walking.

A

B. It is possible to stand with feet together.

24
Q

Bilateral signs of cerebellar dysfunction affecting the trunk, limbs, and cranial musculature.

A. Caudal vermis syndrome
B. Pancerebellar syndrome
C. Rostral vermis syndrome
D. Hemispheric syndrome

A

B. Pancerebellar syndrome

25
Q

Incoordination of ipsilateral movements.

A. Caudal vermis syndrome
B. Pancerebellar syndrome
C. Rostral vermis syndrome
D. Hemispheric syndrome

A

D. Hemispheric syndrome

26
Q

Some of the manifestations are: Wide-based stance and titubating gait; normal or only slightly impaired arm coordination.

A. Caudal vermis syndrome
B. Pancerebellar syndrome
C. Rostral vermis syndrome
D. Hemispheric syndrome

A

C. Rostral vermis syndrome

27
Q

Axial disequilibrium and staggering gait.

A. Caudal vermis syndrome
B. Pancerebellar syndrome
C. Rostral vermis syndrome
D. Hemispheric syndrome

A

A. Caudal vermis syndrome

28
Q

TRUE or FALSE: Around 20% of metastases occur in the posterior fossa.

A

TRUE

29
Q

Arises in the posterior part of the vermis and neuroepithelial roof of the 4th ventricle.

A

Medullablastoma

30
Q

Associated with von Hippel-Lindau disease.

A

Hemangioblastoma

31
Q

Which are the following are NOT paired correctly regarding occurrence cerebellar strokes:

A. PICA - 40%
B. AICA - 40%
C. AICA - 5%
D. SCA - 35%

A

B. AICA - 40%

32
Q

Cerebellar hemorrhages often occur in…

A. Thalamus
B. Cerebellar hemisphere
C. Putamen and adjacent internal capsule
D. Pons

A

C. Putamen and adjacent internal capsule