Formation of the vesicles of the brain. The figures depict the division of the forebrain vesicle into three (A) and five (B) vesicle stages to form the telencephalon and diencephalon (from the prosencephalon) as well as the formation of the midbrain and the metencephalon and myelencephalon (from the hindbrain). These illustrations are dorsal views of the neural tube at the two different stages in which the flexures are not shown. Panel C depicts these stages in a lateral view. The flexures resul
#Brain of a human #embryo in the sixth week of development. The brain does not simply grow, but rather develops in an intricately orchestrated sequence of stages. It changes in shape from a simple swelling at the front of the nerve cord in the earliest embryonic stages, to a complex array of areas and connections.