Motor Pathways

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1. Action potentials fired by 1a muscle spindle fibres increases when?

  • The muscle spindle fibre is being stretched
  • As the length of the muscle spindle fibre increases
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Other questions in this quiz

2. Which of these is not a function of the descending motor pathways?

  • To alter the strength of reflexes
  • To transmit sensory information to the cerebral cortex
  • To activate motor units

3. 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

4. Which of these is not a way in which muscle force can be modulated?

  • Size Principle
  • Lateral Excitation
  • Frequency Modulation

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

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

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