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.</p> Signup and view all the answers

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

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

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

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

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

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

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

    <p>Middle cerebellar peduncle</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.</p> Signup and view all the answers

    What is the primary function of the spinocerebellum?

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

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

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

    Which structure primarily comprises the middle cerebellar peduncle?

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

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

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

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

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

    What characterizes the internal structure of the cerebellum?

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

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

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

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

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

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