Metencephalon
System
Nervous
Metencephalon
Definition
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].
Also known as epencephalon-2 — per UBERON
The Metencephalon is a part of the Nervous.