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

  • Lateral Excitation
  • Frequency Modulation
  • Size Principle

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

  • The terminations are focused on contralateral lateral interneurones and motorneurones
  • They have a greater effect on extensors than flexors
  • They control muscle groups in the limbs, mainly the distal parts
  • They descend in the contralateral lateral funiculus
  • They have a function in fine, independent dexterity

8. Muscle spindles (a type of stretch receptor) recieve motor supply from...?

  • Delta motorneurones
  • Gamma motorneurones
  • Beta motorneurones
  • Alpha motorneurones

9. 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

10. Which of these is not a way in which motor units can be activated?

  • Spinal nerve reflexes
  • Spontaneously
  • Cranial nerve reflexes
  • Descending motor pathways

11. 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

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

  • Slow
  • Fast