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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Structure A is formed by tract:
assistant
The correct answer is  Nerve fibers entering and leaving the cerebellum pass through superior middle and inferior cerebellar peduncles which connect the cerebellum to midbrain, pons and medulla respectively. Middle cerebellar peduncle is made up of pontocerebellar fibers.