Cerebellum Quiz

What are the main roles of the cerebellum?

• Maintenance of balance and equilibrium

• Initiating motor commands

• Producing paralysis

• Deciding which movements to execute

What is the ratio of cerebellar afferent to efferent fibers?

• 10:1

• 20:1

• 30:1

• 40:1

What do the lateral hemispheres of the cerebellum coordinate?

• Axial musculature

• Limb musculature

• Trunk movement

• Visual feedback

What do midline lesions of the vermis affect?

• Limb movement

• Whole-body posture, locomotion, and balance

• Visual feedback

• Muscle strength

What are the two main classifications of ataxia based on their origin?

• Cerebellar and sensory

• Motor and sensory

• Vestibular and proprioceptive

• Upper and lower motor neuron

What is the primary function of the cerebellar motor syndrome examination?

• To assess muscle strength

• To reveal disturbances in cerebellar function

• To diagnose myopathy

• To evaluate sensory input

What is the most common malignant brain tumor of childhood associated with truncal ataxia?

• Glioblastoma

• Medulloblastoma

• Astrocytoma

• Neuroblastoma

What is a common sign of truncal ataxia when the eyes are closed?

• Increased muscle strength

• No change in postural sway

• Improved balance

• Enhanced coordination

What is the term for the inability to maintain a static posture while standing without support?

• Titubation

• Apraxia

• Myopathy

• Neuropathy

What type of stance do persons with truncal ataxia use to compensate for reduced balance?

• Narrow-based stance

• Wide-based stance

• One-legged stance

• Cross-legged stance