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The '''Brain stem''' is the most [[dorsal]] subdivision of the [[brain]] in the [[central nervous system]]. It is the primary conduit for incoming [[sensory]] information and outgoing motor control signals. It is composed of the [[medulla]], [[pons]] and [[midbrain]].

The '''Brain stem''' is the most [[dorsal]] subdivision of the [[brain]] in the [[central nervous system]]. It is the primary conduit for incoming [[sensory]] information and outgoing motor control signals. It is composed of the [[medulla]], [[pons]] and [[midbrain]]. In [[mammal]]s, as opposed to other organisms, it is bifurcated by the [[medulla]], although the reason is not fully understood.

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