This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
Chorea occure due to damage- 
Select and explain. 
A. Subthalamus, B. Globus pallidus, C. Substantia nigra, D. Striatum
D: Striatum
Answer: D: Striatum 
Explanation: Ans. is 'd' i.e., Striatum DiseasePart of Basal ganglia involvedParkinsonismHuntington choreaBallismAthetosisSubstantia nigra pars compacta - Nigrastriatal pathwayStriatum (mainly caudate nucleus; may be putamen)Subthalamic nucleiGlobus pallidus (mainly)Q and Subthalamic nucleus.