Which of These is Not One of the Main Divisions

Question

Which of these is not one of the main divisions of the adult brain?
A) cerebrum
B) diencephalon
C) prosencephalon
D) brainstem
E) cerebellum

Accepted Answer

The prosencephalon is not one of the four main divisions of the adult brain. The cerebrum, diencephalon, brainstem, and cerebellum are the four main divisions. The prosencephalon is a developmental structure that gives rise to the telencephalon and diencephalon, which are parts of the cerebrum and diencephalon divisions, respectively.