The cerebellum is derived from which embryonic division?

• A. Telencephalon
• B. Diencephalon
• C. Mesencephalon
• D. Metencephalon

Answer: (D)

The cerebellum develops from the metencephalon, a division of the hindbrain (rhombencephalon). During early development, the hindbrain splits into metencephalon and myelencephalon; the metencephalon gives rise to structures in the posterior brain like the cerebellum and the pons. The cerebellar cortex forms from the dorsal part of the metencephalon via the rhombic lip, which explains its direct embryonic origin. In contrast, the forebrain derivatives come from the telencephalon and diencephalon, while the midbrain comes from the mesencephalon, so these do not give rise to the cerebellum.