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
Dysmetria is seen in lesion of 
Select and explain. 
A. Basal ganglia, B. Cerebellum, C. Pons, D. Midbrain
B: Cerebellum
Answer: B: Cerebellum 
Explanation: Dysmetria or past- pointing is a prompt initiation for a gross corrective action as attempting to touch an object with a finger results in overshooting to one or other side , but the correction overshoots to the other side. And finger oscillates to and fro. This is typically seen in cerebellar disease. Ref:Ganongs Review of medical physiology;23 rd edition ; pg :258