DISORDERS OF THE CEREBELLUM Flashcards
The spinocerebellum is consist of the following EXCEPT:
A. Uvula
B. Anterior lobe of the vermis
C. Pyramids
D. Middle portion of the vermis
D. Middle portion of the vermis
Controls muscle tone and axial and limb movements.
A. Paleocerebellum
B. Archicerebellum
C. Neocerebellum
D. Vestibulocerebellum
A. Paleocerebellum
Planning and initiation of movements as well as regulation of fine limb movements.
A. Archicerebellum
B. Neocerebellum
C. Spinocerebellum
D. Vestibulocerebellum
B. Neocerebellum
The archicerebellum plays a role in the ______________.
A. Eye movements
B. Control of muscle tone
C. Body equilibrium
D. Both A and C
D. Both A and C
Output of the cerebellum.
Purkinje cell
Main neurotransmitter of cerebellum.
Y-ABA
From lateral to medial.
A. Emboliform, Globose, Fastigial, Dentate
B. Dentate, Emboliform, Globose, Fastigial
C. Fastigial, Globose, Emboliform, Dentate
D. Dentate, Fastigial, Globose, Emboliform
B. Dentate, Emboliform, Globose, Fastigial
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.
B. Inferior, Middle
Also known as the brachium pontis.
Middle cerebellar peduncle
Connects the body to the medulla oblongata. Also known as the restiform body.
Inferior cerebellar peduncle
The following are afferent tracts of the inferior cerebellar peduncle EXCEPT:
A. Arcuatocerebellar
B. Dorsal spinocerebellar
C. Ventral spinocerebellar
D. Olivocerebellar
C. Ventral spinocerebellar
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.
C. Middle cerebellar peduncle
The following are efferent tracts of the superior cerebellar peduncle EXCEPT:
A. Dentatorubral
B. Dentatothalamic
C. Fastigiobulbar
D. Uncinate bundle of Russell
C. Fastigiobulbar
Incoordination of volitional movement.
Ataxia
Lack of synergy of the various muscle components. Characterized by disjointed and clumsy movemenys.
Asynergia
Abnormalities in the rate, range, and force of movement.
Dysmteria
Inability to do rapid alternating movements.
Dysdiadochokinesia
Depression of the gamma and alpha motor neurons activity and the LEAST evident of the cerebellar abnormalities.
Hypotonia
TRUE or FALSE: Hypotonia is more apparent with acute than chronic lesions.
TRUE
Overshooting the target.
Hypermetria
Variable intonation and abnormalities in articulation
Scanning dysarthia
Nystagmus characterized by lesions on the uvula and nodulus.
Periodic alternating nystagmus
Posterior midline lesions causes this type of nystagmus.
Downbeat nystagmus
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.
B. It is possible to stand with feet together.
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
B. Pancerebellar syndrome
Incoordination of ipsilateral movements.
A. Caudal vermis syndrome
B. Pancerebellar syndrome
C. Rostral vermis syndrome
D. Hemispheric syndrome
D. Hemispheric syndrome
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
C. Rostral vermis syndrome
Axial disequilibrium and staggering gait.
A. Caudal vermis syndrome
B. Pancerebellar syndrome
C. Rostral vermis syndrome
D. Hemispheric syndrome
A. Caudal vermis syndrome
TRUE or FALSE: Around 20% of metastases occur in the posterior fossa.
TRUE
Arises in the posterior part of the vermis and neuroepithelial roof of the 4th ventricle.
Medullablastoma
Associated with von Hippel-Lindau disease.
Hemangioblastoma
Which are the following are NOT paired correctly regarding occurrence cerebellar strokes:
A. PICA - 40%
B. AICA - 40%
C. AICA - 5%
D. SCA - 35%
B. AICA - 40%
Cerebellar hemorrhages often occur in…
A. Thalamus
B. Cerebellar hemisphere
C. Putamen and adjacent internal capsule
D. Pons
C. Putamen and adjacent internal capsule
