Basal Ganglia MCQ Quiz | Neuroanatomy

1. Which of the following is NOT considered a primary component of the basal ganglia?

2. The neostriatum (or striatum) is anatomically and functionally composed of which two structures?

3. The lentiform nucleus is a cone-shaped structure formed by the:

4. The primary input nucleus of the basal ganglia, receiving massive projections from nearly all of the cerebral cortex, is the:

5. The major output nuclei of the basal ganglia, which project to the thalamus to complete the motor loop, are the:

6. The direct pathway promotes movement. The striatal neurons of this pathway primarily release which neurotransmitters?

7. The indirect pathway inhibits movement. The striatal neurons of this pathway primarily release which neurotransmitters?

8. The substantia nigra pars compacta (SNc) modulates basal ganglia activity primarily through the release of:

9. Dopamine from the SNc excites the direct pathway via which type of receptors on striatal neurons?

10. Dopamine from the SNc inhibits the indirect pathway via which type of receptors on striatal neurons?

11. Which statement best describes the primary function of the basal ganglia?

12. Parkinson’s disease is primarily caused by the degeneration of dopaminergic neurons in the:

13. Huntington’s disease, characterized by chorea, is associated with the degeneration of which neurons, primarily affecting the indirect pathway?

14. A vascular lesion in which structure is most likely to cause hemiballismus, characterized by wild, flinging movements of the contralateral limbs?

15. The main target of the output nuclei of the basal ganglia (GPi/SNr) is the:

16. The output from the Globus Pallidus interna (GPi) and Substantia Nigra pars reticulata (SNr) is primarily:

17. The subthalamic nucleus provides a powerful excitatory (glutamatergic) drive to which structure?

18. The net effect of activating the ‘direct pathway’ of the basal ganglia is:

19. The net effect of activating the ‘indirect pathway’ of the basal ganglia is:

20. The term ‘corpus striatum’ refers to the combination of:

21. The lenticulostriate arteries, which are common sites for lacunar strokes affecting the basal ganglia, are typically branches of the:

22. The caudate nucleus is particularly involved in which aspect of motor control and behavior?

23. The putamen, as part of the motor loop, is primarily involved in regulating:

24. Wilson’s disease, a disorder of copper metabolism, can cause significant damage to the basal ganglia, particularly the:

25. Which thalamic nuclei receive input from the basal ganglia and project to the motor, premotor, and supplementary motor cortices?