Ectoderm

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Ectoderm in the embryo

Ectoderm (Latin: ectodermis, Greek ectopsis, dermal skin), ectoblast - external germ layer, cell layer formed in embryonic development of animals during various gastrulation.

The outer body cover, the anterior and posterior intestinal epithelium, the nervous system and sensory organs develop from the ectoderm. The ectodermal origin has, among others, Malpighian coils and the arthropodic system of arthropods. At the time of neuronization in the development of vertebrates, ectoderma is divided into surface ectoderm and neuroektodermę. From the former, the epidermis and its various derivative forms (sweat glands, sebaceous glands, feathers, scales, hair, etc.), partially enamel of the teeth, elements of the eye (cornea, lens, retina) arise. A nerve coil is created from neuroectoderm. Bibliography

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