IntroNS Practice Exam

Which vesicle corresponds to the hindbrain (rhombencephalon)?

Forebrain (prosencephalon) Midbrain (mesencephalon) Endbrain (telencephalon) Hindbrain (rhombencephalon)

Correct Answer:

Hindbrain (rhombencephalon)

Explanation:

In early brain development, the neural tube forms three primary vesicles: prosencephalon (forebrain), mesencephalon (midbrain), and rhombencephalon (hindbrain). The word hindbrain is simply another name for the rhombencephalon, so this vesicle corresponds to the hindbrain. The other terms map to different regions: forebrain is the prosencephalon, and endbrain is an older term for the telencephalon, which is part of the forebrain. (Later on, rhombencephalon itself divides into metencephalon and myelencephalon, giving rise to structures like the cerebellum, pons, and medulla.)

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