Motor Physiology — CNS & Special Senses Physiology

Motor Physiology MCQs: practice questions

Sample Motor Physiology multiple-choice questions from CNS & Special Senses Physiology.

1. During a withdrawal reflex, the stimulated limb undergoes:

   • A. Flexion
   • B. Extension
   • C. No movement
   • D. Only abduction
   • E. Only adduction

2. Dopamine acting at D2 receptors:

   • A. Activates the corticospinal tract directly
   • B. Excites the indirect pathway
   • C. Inhibits the direct pathway
   • D. Inhibits the indirect pathway
   • E. Blocks thalamic nuclei

3. Dopamine acting at D1 receptors has an overall effect of:

   • A. Facilitating movement
   • B. Inhibiting movement
   • C. Blocking the cerebellum
   • D. Blocking all reflexes
   • E. Producing sensory loss

4. The Golgi tendon reflex produces:

   • A. Contraction of the contracting muscle
   • B. Relaxation of the contracting muscle
   • C. Pupillary constriction
   • D. Increased gastric motility
   • E. A pain response

5. The indirect basal ganglia pathway is overall:

   • A. Autonomic
   • B. Excitatory
   • C. Sensory
   • D. Visual
   • E. Inhibitory

6. The premotor and supplementary motor cortices primarily:

7. The Golgi tendon reflex is mediated by:

8. Dysdiadochokinesia refers to inability to:

9. Increased gamma motor neuron activity tends to:

10. The cerebellum is especially important for:

11. The direct basal ganglia pathway is overall:

12. A lesion of the lateral corticospinal tract typically causes:

13. The crossed-extensor response helps maintain:

14. The lateral corticospinal tract decussates mainly in the:

15. A lesion of the subthalamic nucleus can produce:

16. The basal ganglia primarily:

17. Parkinson disease commonly causes:

18. The stretch reflex is classified as:

19. The primary motor cortex is located in area:

20. A cerebellar lesion is most likely to produce:

21. The stretch reflex causes contraction of the:

22. The size principle states that motor units are recruited from:

23. The flexor-withdrawal reflex is:

24. The alpha-gamma coactivation mechanism allows:

25. The sensory receptor for the stretch reflex is the:

26. Loss of dopaminergic neurons in the substantia nigra is associated with:

27. An intention tremor occurs:

28. Stretch of a muscle increases firing in:

29. Fine skilled movement of the digits depends especially on the:

30. Gamma motor neurons regulate: