Neuroanatomy: Motor Tracts and Nuclei Quiz
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Questions and Answers

Which tract modulates overall muscle tone in the body?

  • Corticospinal tract
  • Vestibulospinal tract
  • Corticobulbar tract
  • Reticulospinal tract (correct)

    • Which cranial nerve is involved in controlling facial expressions?

  • Cranial nerve V
  • Cranial nerve VII (correct)
  • Cranial nerve VI
  • Cranial nerve VIII

    • What is the term for the uncontrolled muscle twitching associated with lower motor neuron symptoms?

  • Fasciculations (correct)
  • Contractions
  • Fibrillations
  • Spasms

    • Which motor neuron type is affected by polio?

    <p>Lower motor neurons</p> Signup and view all the answers

    What is the result of a lesion in the lateral corticospinal tract?

    <p>Increased muscle tone</p> Signup and view all the answers

    Which tract is responsible for controlling the movement of the extremities?

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

    What is the term for the increased passive resistance associated with upper motor neuron symptoms?

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

    Which disease affects both upper and lower motor neurons?

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

    What is the term for the abnormal gait caused by foot drop due to loss of dorsiflexion?

    <p>Steppage gait</p> Signup and view all the answers

    Which tract facilitates extensor muscle tone in the legs?

    <p>Lateral vestibulospinal tract</p> Signup and view all the answers

    What are the two types of herniation mentioned in the text?

    <p>Subfalcine and transtentorial herniation</p> Signup and view all the answers

    Which of the following is NOT a type of hematoma?

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

    What is the correct pathway for CSF according to the text?

    <p>SC - pia matter - subarachnoid space - arachnoid space - meningeal layer of dura - epidural fat - ligaments</p> Signup and view all the answers

    Which tract primarily controls distal muscles of hands and feet?

    <p>Lateral cortical spinal tract</p> Signup and view all the answers

    What type of posturing is typically seen with lesions above the level of the red nuclei?

    <p>Decorticate posturing</p> Signup and view all the answers

    Which tract facilitates flexor muscle tone?

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

    What is the primary function of the anterior cortical spinal tract?

    <p>Controls axial muscles</p> Signup and view all the answers

    Which tract divides and crosses at the spinal level?

    <p>Anterior cortical spinal tract</p> Signup and view all the answers

    Which of the following is NOT a function of the rubrospinal tract?

    <p>Controls autonomic functions</p> Signup and view all the answers

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