AskDefine | Define ectoderm

Dictionary Definition

ectoderm n : the outer germ layer that develops into skin and nervous tissue [syn: exoderm, ectoblast]

User Contributed Dictionary

English

Noun

  1. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the epidermis (skin) and nervous system of the adult.

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Extensive Definition

The ectoderm is the start of a tissue that covers the body surfaces. It emerges first and forms from the outermost of the germ layers.
Generally speaking, the ectoderm differentiates to form the Nervous system, Epidermis, and 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.
ectoderm in Czech: Ektoderm
ectoderm in German: Ektoderm
ectoderm in Spanish: Ectodermo
ectoderm in Esperanto: Ektodermo
ectoderm in French: Ectoderme
ectoderm in Italian: Ectoderma
ectoderm in Hebrew: שכבת נבט
ectoderm in Dutch: Ectoderm
ectoderm in Norwegian: Ektoderm
ectoderm in Polish: Ektoderma
ectoderm in Portuguese: Ectoderme
ectoderm in Romanian: Ectoderm
ectoderm in Russian: Эктодерма
ectoderm in Slovak: Ektoderma
ectoderm in Serbian: Ектодерм
ectoderm in Finnish: Ektodermi
ectoderm in Swedish: Ektoderm
ectoderm in Turkish: Ektoderm
ectoderm in Ukrainian: Ектодерма
ectoderm in Chinese: 外胚层
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