The prominent cystic space in the posterior portion of the brain is called which structure?

The prominent cystic space in the posterior portion of the brain is called which structure?

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

Answer: (A)

In the brain’s development, the hindbrain is called the rhombencephalon. A prominent cystic space in the posterior brain region corresponds to the fourth ventricle, which sits within and develops from the hindbrain area. So the posterior cystic space maps to the rhombencephalon. The other regions—the forebrain (telencephalon), the central forebrain structures (diencephalon), and the midbrain (mesencephalon)—are located more rostrally and do not account for this posterior cystic space.

In the brain’s development, the hindbrain is called the rhombencephalon. A prominent cystic space in the posterior brain region corresponds to the fourth ventricle, which sits within and develops from the hindbrain area. So the posterior cystic space maps to the rhombencephalon. The other regions—the forebrain (telencephalon), the central forebrain structures (diencephalon), and the midbrain (mesencephalon)—are located more rostrally and do not account for this posterior cystic space.