Gastrulation is the stage in the early embryonic development of most animals, during which the blastula (a single-layered hollow sphere of cells), or in mammals, the blastocyst, is reorganized into a two …

gastrula, early multicellular embryo, composed of two or more germinal layers of cells from which the various organs later derive. The gastrula develops from the hollow, single-layered ball of cells called …

Gastrulation results in three important outcomes: The formation of the embryonic tissues, called germ layers. In organisms with three germ layers (triploblasts), the layers include the endoderm, ectoderm, …

The meaning of GASTRULA is an early metazoan embryo in which the ectoderm, mesoderm, and endoderm are established either by invagination of the blastula (as in fish and amphibians) to form a …

Aug 22, 2025 · In the 3rd week of embryonic development, the cells of the bilaminar disc (epiblast and hypoblast) undergo a highly specialised process called gastrulation. During this process, the two cell …

Sep 2, 2025 · Gastrulation is one of the stages of early embryonic development through which the trilaminar germinative disc is formed, a structure with 3 differentiated embryonic layers that will give …

Aug 3, 2023 · During gastrulation, the bilaminar embryonic disc is converted into a trilaminar embryonic disc. Extensive cell shape changes, rearrangement, movement, and alterations in adhesive …

The term gastrulation means the formation of gut (Greek, gastrula = belly), but has now a more broad sense to to describe the formation of the trilaminar embryo.

During gastrulation, the germ layers of an embryo are formed and the body plan of the mature organism is established. Movements on a massive scale allow cells to establish great complexity from a very …

Aug 14, 2025 · This intricate process transforms a simple, single-layered embryonic structure, known as a blastula, into a more complex, multi-layered form called a gastrula. During gastrulation, a …