Ectoderm 315458 225882587 2008-07-15T21:08:35Z Chodges 451144 {{Infobox Embryology | Name = {{PAGENAME}} | Latin = | GraySubject = 6 | GrayPage = 48 | Image = Ectoderm.png | Caption = Organs derived from ectoderm. | Image2 = Gray11.png | Caption2 = Section through embryonic disk of [[Vespertilio murinus]]. | System = | CarnegieStage = | Days = 16 | Precursor = | GivesRiseTo = | MeshName = Ectoderm | MeshNumber = A16.254.425.273 | DorlandsPre = | DorlandsSuf = | }} The '''ectoderm''' is the start of a tissue that covers the body surfaces. It emerges first and forms from the outermost of the [[germ layer]]s. Generally speaking, the ectoderm differentiates to form the [[nervous system]], [[Epidermis (skin)|epidermis]], and the outer part of [[integumentary system|integument]]. In [[vertebrate]]s, 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]]. [[Image:Gray32.png|thumb|left|Section through ovum imbedded in the uterine decidua]] {{Embryology}} {{Germ layer}} [[Category:Developmental biology]] [[Category:Embryology]] [[Category:Gastrulation]] {{developmental-biology-stub}} [[cs:Ektoderm]] [[de:Ektoderm]] [[es:Ectodermo]] [[eo:Ektodermo]] [[fr:Ectoderme]] [[it:Ectoderma]] [[he:שכבת נבט]] [[nl:Ectoderm]] [[no:Ektoderm]] [[pl:Ektoderma]] [[pt:Ectoderme]] [[ro:Ectoderm]] [[ru:Эктодерма]] [[sk:Ektoderma]] [[sr:Ектодерм]] [[fi:Ektodermi]] [[sv:Ektoderm]] [[th:เอ็กโทเดิร์ม]] [[tr:Ektoderm]] [[uk:Ектодерма]] [[zh:外胚层]]