The tectum is the dorsal part of the metencephalon. The metencephalon gives rise to the cerebellum and pons. The metencephalon will become the cerebellum and the pons. The hindbrain or metencephalon is particularly involved in swimming and balance. The hindbrain (or metencephalon) is particularly involved in swimming and balance. The metencephalon becomes the pons and the cerebellum, and the myelencephalon becomes the medulla oblongata.