PART B: THE BRAIN STEM The brainstem is responsible for relaying information to the cerebrum and cerebellum. It also contains areas that are vital to the autonomic nervous system and reflexes. There are three major parts to the brain stem. 1. Use pp. 413-415 of your textbook to describe the functions of each region of the brainstem below. Structure Functions Medulla oblongata Midbrain (mesencephalon) Pons

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