Editing Brainstem (section)

===Development===
The human brainstem emerges from two of the three [[brain vesicle|primary brain vesicles]] formed of the [[neural tube]].  The [[mesencephalon]] is the second of the three primary vesicles, and does not further differentiate into a [[brain vesicle|secondary brain vesicle]].  This will become the midbrain.  The third primary vesicle, the [[rhombencephalon]] (hindbrain) will further differentiate into two secondary vesicles, the [[metencephalon]] and the [[myelencephalon]].  The metencephalon will become the [[cerebellum]] and the pons.  The more caudal myelencephalon will become the [[medulla oblongata|medulla]].