Motor Pathways

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1. Which of these is false when considering lateral descending motor pathways?

  • They have a greater effect on extensors than flexors
  • The terminations are focused on contralateral lateral interneurones and motorneurones
  • They control muscle groups in the limbs, mainly the distal parts
  • They have a function in fine, independent dexterity
  • They descend in the contralateral lateral funiculus
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2. A stroke affecting the medial descending motor pathways will have?

  • Little effect because the pathways have bilateral terminations
  • A large effect because the terminations are contralateral

3. The stretch reflex is a?

  • Postural reflex
  • Protective reflex

4. Rhythmic movements, such as locomotion or chewing, are produced by?

  • Central pattern generators (CPGs)
  • All three
  • Descending motor pathways
  • Cranial nerve and spinal nerve reflexes

5. Do type I motor units exhibit fast or slow responses?

  • Slow
  • Fast

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