Derivatives from metencephalon and myelencephalon?

Derivatives from metencephalon and myelencephalon?

• A. Metencephalon gives medulla; Myelencephalon gives pons and cerebellum
• B. Metencephalon gives pons and cerebellum; Myelencephalon gives medulla
• C. Metencephalon gives thalamus; Myelencephalon gives midbrain
• D. Metencephalon gives spinal cord; Myelencephalon gives pons

Answer: (B)

The question tests how the hindbrain divides during development and which adult structures arise from each part. The metencephalon becomes the pons and cerebellum, while the myelencephalon becomes the medulla oblongata. So the correct pairing is metencephalon with pons and cerebellum, and myelencephalon with medulla. The other options either swap these derivatives, point to structures from different brain regions (like thalamus or midbrain), or refer to the spinal cord, which originates from a different part of the neural tube.

The question tests how the hindbrain divides during development and which adult structures arise from each part. The metencephalon becomes the pons and cerebellum, while the myelencephalon becomes the medulla oblongata. So the correct pairing is metencephalon with pons and cerebellum, and myelencephalon with medulla. The other options either swap these derivatives, point to structures from different brain regions (like thalamus or midbrain), or refer to the spinal cord, which originates from a different part of the neural tube.