Answer:
Terms associated with gastrulation includes blastula, gestation, germ layers, endoderm, mesoderm, ectoderm e.t.c
Explanation:
Gastrulation is a process involving a complex series of cell shape changes and cell movement that occurs in the blastula. It occurs during the development inside the womb over a period of time before birth.
The period of development is known as Gestation. These cells move and rearrange dramatically in the blastula creating the embryonic tissue layers which in turn produces the tissue and organs of the adult animal.
Blastula is an animal embryo or egg at the early stage an early stage of development when the cells are still in the shape of balls.
Germ layers: the formation of the embryonic tissue
During the gastrulation process, three germ layers are formed
1) Endoderm: the inner most layer
2) Mesoderm: Middle layer
3) Ectoderm: outermost layer
Cells that are tightly attached to each other via junctions will move as cell sheets
Invagination – Cell sheet dents inward
Involution – Cell sheet rolls inward
Delamination – Cell sheet splits in two
Ingression – Cells break away from cell sheet and migrate as individual cells
Archenteron- or embryonic gut/digestive cavity of the embrayo which eventually becomes the digestive tract
Blastoderm: is a single layer of embryonic tissue that later develops to the blastula and divides into the three germ layers from which the embrayo develops
