What are the major derivatives of the rhombencephalon?

What are the major derivatives of the rhombencephalon?

• A. Telencephalon and Diencephalon
• B. Metencephalon (pons and cerebellum) and Myelencephalon (medulla)
• C. Diencephalon and Mesencephalon
• D. Spinal cord and brainstem

Answer: (B)

The major derivatives of the rhombencephalon are metencephalon and myelencephalon. During embryonic development, the hindbrain (rhombencephalon) splits into these two secondary vesicles. The metencephalon becomes the pons and cerebellum, while the myelencephalon becomes the medulla oblongata. This differs from derivatives of the forebrain (telencephalon and diencephalon) and from structures arising from other vesicles like the midbrain (mesencephalon). So the pairing of metencephalon and myelencephalon best reflects what the rhombencephalon gives rise to.

The major derivatives of the rhombencephalon are metencephalon and myelencephalon. During embryonic development, the hindbrain (rhombencephalon) splits into these two secondary vesicles. The metencephalon becomes the pons and cerebellum, while the myelencephalon becomes the medulla oblongata. This differs from derivatives of the forebrain (telencephalon and diencephalon) and from structures arising from other vesicles like the midbrain (mesencephalon). So the pairing of metencephalon and myelencephalon best reflects what the rhombencephalon gives rise to.