part of part of contributes to morphology of immediate transformation of metencephalon Anterior part of the hindbrain ventral to the cerebellum[NIFSTD:birnlex_965]. BAMS:Met BTO:0000673 CALOHA:TS-2029 DHBA:10655 EHDAA2:0001149 EHDAA:5498 EMAPA:17071 FMA:62003 GAID:594 HBA:4833 MA:0000197 MESH:D020540 Rostral segment of the hindbrain that has as its parts the pons (where present) and the cerebellum[WP,modified]. The anterior of two brain vesicles formed by specialization of the rhombencephalon in the developing embryo. It gives rise to cerebellum and pons. [TFD][VHOG] The early development of most vertebrate brains is similar (...). The zebrafish neural tube follows the same basic differentiation pattern as the mammalian neural tube (reference 1); The brain develops from three embryonic enlargements of the neural tube, which later differentiate into five regions. A forebrain differentiates into telencephalon and diencephalon. The midbrain, or mesencephalon, remains undivided. The hindbrain divides into the metencephalon and myelencephalon. Cavities within the brain enlarge to form a series of interconnected ventricles (reference 2).[well established][VHOG] UBERON:0001895 UMLS:C0376353 UMLS:C1516904 VHOG:0000741 epencephalon epencephalon-2 http://braininfo.rprc.washington.edu/centraldirectory.aspx?ID=543 the terms metencephalon and myelencephalon are only meaningful in mammals and birds[Neuroanatomy of the Zebrafish Brain]. In zebrafish, with the exception of the cerebellum, the ventral remainder of the metencephalon can be separated only arbitrarily from the more caudal myelencephalic portion of the medulla oblongata and thus these are not distinguished in ZFA[ZFA]. uberon hindbrain segmental subdivision of hindbrain future metencephalon