germ layer (redirected from Germ layers)

germ layer

n.

Any of three cellular layers, the ectoderm, endoderm, or mesoderm, into which most animal embryos differentiate and from which the organs and tissues of the body develop through further differentiation.

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germ layer

Any of three cellular layers, the ectoderm, endoderm, or mesoderm, into which most animal embryos differentiate in the gastrula stage and from which the organs and tissues of the body develop through further differentiation.

Thesaurus

Noun

1.

germ layer - (embryology) any of the 3 layers of cells differentiated in embryos following gastrulation embryonic tissue - tissue in an embryo ectoblast, ectoderm, exoderm - the outer germ layer that develops into skin and nervous tissue mesoblast, mesoderm - the middle germ layer that develops into muscle and bone and cartilage and blood and connective tissue endoblast, endoderm, entoblast, entoderm, hypoblast - the inner germ layer that develops into the lining of the digestive and respiratory systems embryology - the branch of biology that studies the formation and early development of living organisms