gastrulation

Germ layer formation

Gastrulation is the stage of embryonic development when a hollow ball of cells reorganizes into distinct layers—typically three—that will form all the body's tissues and organs.

It transforms the embryo from a simple sphere into a structured form with inside and outside, front and back.

Gastrulation is sometimes called the most important event in your life.

structures

ectoderm

Embryo's outer cell layer

  • endodermInnermost embryonic tissue layer
  • mesodermEmbryonic tissue forming muscles
  • nodeConnection point in networks

Spemann organizer · shield

process

invagination

Infolding of tissue layers

EMT

organisms

frog

Tailless leaping amphibian

chick · mouse · lamprey · axolotl

development

embryogenesis

Formation of early life

induction · segmentation

Opposites
developmental sequence

gastrulationcleavage

Tendency to split cleanly

senescence · degeneration · organogenesis · fertilization · death

morphogenetic direction

gastrulationmorula

Solid embryonic cell mass

morphogenetic process type

gastrulationdelamination

Separation of bonded layers

Family

gastric, gastronomy, gastropod, gastritis, gastrula, gastrectomy, gastrointestinal, gastroenterology, gastroparesis

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