Gastrula meaning

găstrə-lə
An embryo at the stage following the blastula, after the movement of cells results in the formation of the three germ layers, ectoderm, mesoderm, and endoderm.
noun
0
0
An embryo in an early stage of development, consisting of a sac with two layers, the ectoderm and endoderm, enclosing a central cavity, the archenteron, that opens to the outside through the blastopore.
noun
0
0
An embryo at the stage following the blastula, after the movement of cells results in the formation of the three germ layers, ectoderm, mesoderm, and endoderm.
noun
0
0
An animal embryo at the stage following the blastula. The gastrula develops from the blastula by invagination (inpocketing), forming an inner cavity with an opening and causing the cells to be distributed into an outer layer (ectoderm) and an inner layer (endoderm). In complex animals such as vertebrates, a third layer (mesoderm) also forms. These layers later develop into the organs and tissues of the body. In vertebrates and other deuterostomes, the opening of the gastrula becomes the anus, while in protostomes (such as arthropods), it becomes the mouth. &diamf3; The development of an embryo from blastula to gastrula is called gastrulation.
0
0
(embryology) A stage in the development of embryos of most animals consisting of a two-layered sac of ectoderm and endoderm.
noun
0
0
Advertisement

Origin of gastrula

  • New Latin Greek gastēr gastr- belly Latin -ula feminine diminutive suff.

    From American Heritage Dictionary of the English Language, 5th Edition