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Found Gastrula 2 times.

Displaying results 1 to 10.

1. Gastrula
A hollow ball of cell s with one part of the ball pushed into the interior blastocoele (called an invagination). This early stage of animal embryonic development forms just after the blastula stage. By the end of the gastrulation process, the different embryonic germ layer s ( endoderm , ectoderm , and sometimes mesoderm ) can clearly be identified.

2. Gastrulation
A process during early embryonic development in animals in which large-scale cell migration occurs and different cell types emerge to form the germ layer s ( endoderm , ectoderm , and sometimes mesoderm ). The stage takes place just after the blastula stage and begins with an invagination (indenting) of the hollow ball of cells. During this process, the embryo is called a gastrula .

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