Anatomy General anatomy b3771386 4th Ventricle develops from A Telencerphalon B Mesencephalon C Diecephalon D Rhombencephlon High-Yield Explanation Inderbir Singh&;s Human embryology Tenth edition Pg 321 The cavity of mesencephalon remains narrow and forms the aqueduct while the cavity of rhombencephalon forms the fouh ventricle