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Ectoderm: Wikis


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Organs derived from ectoderm.
Section through embryonic disk of Vespertilio murinus.
Gray's subject #6 48
Days 16
MeSH Ectoderm

The ectoderm is the outer layer of the embryo. It emerges first and forms from the outermost of the germ layers.

Generally speaking, the ectoderm differentiates to form the nervous system, tooth enamel and the epidermis (the outer part of integument).

In vertebrates, the ectoderm has three parts: external ectoderm (also known as surface ectoderm), the neural crest, and neural tube. The latter two are known as neuroectoderm.

Section through ovum imbedded in the uterine decidua

See also

Ectoderm specification



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