Cerebellum

Question 1

Describe the pathway for preplanning movement

Answer 1

Lateral hemisphere - dentate nucleus - superior pedincle - (VL) thalamus - cerebral cortex

Question 2

Describe the pathway for motor execution via the paravermal cortex

Answer 2

Paravermal cortex - globose and emboliform nuclei - superior peduncle - red nucleus - lateral descending pathways

Question 3

Describe the pathway for motor execution via the vermis

Answer 3

Vermis - fastigial nucleus - inferior peduncle - medial descending pathways

Question 4

Describe the pathway for posture and balance and eye movement coordination

Answer 4

Flocculonodular lobe - fastigial nucleus - inferior peduncle - vestibular nuclei + reticular formation

Question 5

What cells are lost in niemman pick disease type C?

Answer 5

Purkinje cells

Question 6

What artery is damage in cerebellum stroke syndrome?

Answer 6

Superior cerebellar artery

Question 7

What is nystagmus?

Answer 7

Jerky eye movements

Question 8

Describe the pathway for unconcsious proprioception

Answer 8

Spinal cord - spinocerebellar tract - ipsilateral input - anterior lobe and vermis

Question 9

Describe the pathway for reflex and balance

Answer 9

Vestibular nuclei (medulla) - vestibulocochlear tract - anterior lobe and vermis

Question 10

Describe the pathway for learning and timing of movement

Answer 10

Inferior olive - olivocerebllar tract - climbing fibres - Purkinje fibres - cerebelar hemispheres

Question 11

What type of damage is cerebellar damage?

Answer 11

Ipsilateral (double crossing to motor neuron)

Question 12

What are the symptoms of cerebellar damage?

Answer 12

• Hypotonia
• Intention termor
• Overshoot (dysteria)
• Ataxia
• Nystagmus
• Dysdiadochoknesis
• Cognitive speech