The midbrain was derived from which embryonic brain division?

The midbrain was derived from which embryonic brain division?

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

Answer: (C)

Embryologically, the midbrain comes from the mesencephalon, the middle primary brain vesicle. Early in development, the neural tube forms three primary vesicles: prosencephalon (forebrain), mesencephalon (midbrain), and rhombencephalon (hindbrain). These then subdivide into five secondary vesicles: the forebrain yields telencephalon and diencephalon; the hindbrain yields metencephalon and myelencephalon. The midbrain remains as the mesencephalon, giving rise to midbrain structures such as the tectum and tegmentum. So the midbrain is derived from the mesencephalon.

Embryologically, the midbrain comes from the mesencephalon, the middle primary brain vesicle. Early in development, the neural tube forms three primary vesicles: prosencephalon (forebrain), mesencephalon (midbrain), and rhombencephalon (hindbrain). These then subdivide into five secondary vesicles: the forebrain yields telencephalon and diencephalon; the hindbrain yields metencephalon and myelencephalon. The midbrain remains as the mesencephalon, giving rise to midbrain structures such as the tectum and tegmentum. So the midbrain is derived from the mesencephalon.