Q. After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described?
In a schematic longitudinal section of the embryo after the neurula stage the outermost layer of cells is the ectoderm and in the ventral region comes the archenteron tube formed of endodermal cells in both sides of the embryo coeloms delimited by mesoderm are there. In the central region in the middle and above the archenteron of the coeloms there is the notochord and In the dorsal region just above the notochord lies the neural tube.