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gastrulation
Значение термина gastrulation в knolik
gastrulation - gastrulation
gastrulation - Embryological term for the complex of cell movements which occurs in almost all animals at the end of the cleavage period. See also: Blastula. The movements carry those cells whose descendants will form the future internal organs from their largely superficial position in the blastula to approximately their definitive positions inside the embryo. In many embryos, these presumptive internal organs undergo gastrulation in two main groups of cells, endoderm (future gut, etc.), and mesoderm (future muscle, blood, etc.). The ectoderm (future external layer, and also the future nervous system, which later becomes internal) is also rearranged during the gastrulation movements to approximately its definitive position. See also: Blastopore.
Рядом со словом gastrulation в knolik
| gastrula | В начало буква "" буквосочетание "" | gemma |
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