Cerebellum
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Questions and Answers

What is the primary output cell of the cerebellar cortex?

  • Interneurons
  • Granule cells
  • Purkinje cells (correct)
  • Golgi cells

Which cells in the granular layer are responsible for creating parallel fibres that synapse with Purkinje cells?

  • Granule cells (correct)
  • Climbing cells
  • Purkinje cells
  • Mossy cells

What type of feedback do Golgi cells provide to granule cells?

  • Inhibitory feedback (correct)
  • No feedback
  • Facilitatory feedback
  • Excitatory feedback

Which of the following statements is true about climbing fibres?

<p>They arise from different sources than mossy fibres. (C)</p> Signup and view all the answers

Which structure is the largest deep cerebellar nucleus associated with the neocerebellum?

<p>Dentate nucleus (C)</p> Signup and view all the answers

Which output is primarily affected by lesions in the Purkinje cells?

<p>Coordination of motor control (D)</p> Signup and view all the answers

What is a key characteristic of the granule cell layer in the cerebellum?

<p>Dense packing of granule cells (C)</p> Signup and view all the answers

Which pathway is primarily responsible for providing excitatory input to the cerebellar cortex?

<p>Mossy fibre pathway (C)</p> Signup and view all the answers

Which structure primarily facilitates communication between the cerebellum and the cerebral cortex?

<p>Middle cerebellar peduncle (A)</p> Signup and view all the answers

What is the primary function of the superior cerebellar peduncle?

<p>It is almost entirely an efferent pathway. (B)</p> Signup and view all the answers

What is the primary function of the spinocerebellum?

<p>Control of muscle tone and posture (D)</p> Signup and view all the answers

What type of fiber synapses with Purkinje cells in the molecular layer?

<p>Mossy fibers (B)</p> Signup and view all the answers

Which structure primarily comprises the middle cerebellar peduncle?

<p>Afferent pathways from the pontine nuclei. (C)</p> Signup and view all the answers

Which of the following describes the role of mossy fibers in the cerebellum?

<p>They convey proprioceptive information and sensory input. (C)</p> Signup and view all the answers

Which components are involved in the afferent and efferent pathways of the inferior cerebellar peduncle?

<p>Vestibular nuclei for afferents and reticular formation for efferents. (C)</p> Signup and view all the answers

What are mossy fibers primarily associated with in the cerebellum?

<p>Connecting sensory information to the cerebellar cortex. (D)</p> Signup and view all the answers

Which lobe of the cerebellum is responsible for balance and equilibrium?

<p>Flocculonodular lobe (A)</p> Signup and view all the answers

What is the primary effect of a lesion in the neocerebellum?

<p>Difficulty in executing voluntary movements and fine motor skills (A)</p> Signup and view all the answers

What types of fibers are climbing fibers known for?

<p>Directly influencing the activity of deep cerebellar nuclei. (D)</p> Signup and view all the answers

Which lobe of the cerebellum is considered the largest and most primitive?

<p>Flocculonodular lobe. (B)</p> Signup and view all the answers

Considering the internal structure of the cerebellum, which cell type is primarily located in the molecular layer?

<p>Stellate cells (D)</p> Signup and view all the answers

What characterizes the internal structure of the cerebellum?

<p>Highly convoluted folia that increase surface area. (C)</p> Signup and view all the answers

Which pathway is primarily involved in compensatory eye movements during head movement?

<p>Vestibulo-ocular reflex pathway (C)</p> Signup and view all the answers

What would be the likely impact of lesions in the cerebellum?

<p>Impaired coordination and balance. (C)</p> Signup and view all the answers

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