Question

how are neurulation and gastrulation tied together?

Answer 1

1. Gastrulation generally takes place after the cleavage and formation of blastula.

In embryonic development, gastrulation takes place in which a single layered structure gets develop and reorganises into three layered structure called gastrula.

The cells in the gastrula rearrange spatially to form three germ layers spatially i.e., ectoderm, endoderm, mesoderm.

2. Neurulation is the process that stimulates the development of neural tube from the neural plate, which is formed by the neuronal cells of ectoderm.

The neuronal cells folds outward on the embryo and forms neural plate and a embryonal groove.

The folds of this groove eventually develops and fuse to forms neural tube, basal plate, alar plate and neural canal which eventually differntiates and develops into nervous system.

3. Neurulation is actually followed by the gastrulation and they are tied up together.

Indirectly, the ectoderm layer gives rise to the formation of neural tissue. The mesodermal notochord stimulates the process of neurulation after its development.

The initial developments of neurulation starts with the gastrulation and thereafter the process of neurulation takes place and thus they are inter-linked.