Zoology 342: Motor Systems III (Chapter 26) - Motor Coordination
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Questions and Answers

Where is coordination largely controlled by?

  • Frontal lobe
  • Parietal lobe
  • Cerebellum (correct)
  • Hippocampus
  • What is the nickname given to the Basal Ganglia?

  • Little brain (correct)
  • Big brain
  • Brainstem
  • Middle brain
  • Which region of the cerebellum is associated with motor control in mammals?

  • Medulla
  • Thalamus
  • Vermis (correct)
  • Corpus callosum
  • Which type of cells form a monolayer and are the sole output of the cerebellar cortex?

    <p>Purkinje cells</p> Signup and view all the answers

    How many main regions are there in the cerebellum in mammals?

    <p>Three</p> Signup and view all the answers

    What is the main type of input received by Purkinje cells from granule cells?

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

    What is the main input to the inferior olive?

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

    Which nuclei are mainly influenced by projections from the Fastigial Nucleus?

    <p>Vestibular nuclei</p> Signup and view all the answers

    What is another name for the Globose and Emboliform nuclei?

    <p>Interposed Nuclei</p> Signup and view all the answers

    Which tract is influenced by projections from the Fastigial Nucleus for balance and posture control?

    <p>Reticulospinal tract</p> Signup and view all the answers

    From where does the Clarke's dorsal nucleus receive its input related to proprioception?

    <p>Spinocerebellar tract</p> Signup and view all the answers

    Which cells receive input from Climbing fibers?

    <p>Purkinje cells</p> Signup and view all the answers

    What is the main projection of the interposed nuclei?

    <p>To the nucleus ruber</p> Signup and view all the answers

    Which area does the dorsal dentate nucleus mainly project to?

    <p>Ventrolateral thalamus</p> Signup and view all the answers

    What is the role of Climbing Fibre in the cerebellum's motor adaptation process?

    <p>Reducing the strength of the motor command</p> Signup and view all the answers

    What is a common symptom of Cerebellar defects?

    <p>'Cerebellar gait' - unsteady and halting movements</p> Signup and view all the answers

    What function does the ventral dentate nucleus serve?

    <p>Projecting mainly to the ventroanterior thalamus</p> Signup and view all the answers

    How do MI, basal ganglia, and cerebellum contribute to movement execution?

    <p>Aiding in movement planning and execution through interactions and feedback loops</p> Signup and view all the answers

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