檢視外胚层的原始碼

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| style="background: #FF2400" align= center|  '''<big>外胚层 </big>'''
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|<center><img src=https://img2.baidu.com/it/u=1759558080,1417074487&fm=253&fmt=auto&app=138&f=JPEG?w=848&h=500 width="300"></center>
<small>[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%A4%96%E8%83%9A%E5%B1%82&step_word=&hs=0&pn=0&spn=0&di=7169026086108397569&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=2&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=279320622%2C429026543&os=922174151%2C3784514733&simid=3460190454%2C343100028&adpicid=0&lpn=0&ln=1536&fr=&fmq=1672048060838_R&fm=result&ic=&s=undefined&hd=&latest=&copyright=&se=&sme=&tab=0&width=&height=&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fupload-images.jianshu.io%2Fupload_images%2F5011182-ad4e3b9b28cde899.jpeg%26refer%3Dhttp%3A%2F%2Fupload-images.jianshu.io%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Dauto%3Fsec%3D1674640075%26t%3D42d928ff004ce33a3602752c2f61f7ba&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3B3twgfi7_z%26e3Bv54AzdH3FrAzdH3Fw9kjv1jcnjwc&gsm=1e&rpstart=0&rpnum=0&islist=&querylist=&nojc=undefined&dyTabStr=MCw4LDYsMiwxLDQsNSwzLDcsOQ%3D%3D 来自网络的图片]</small>
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外胚层是胚胎最外的一层胚层。在绘图中，外胚层传统上用蓝色表示。原始外胚层在神经胚形成的过程(神经系统形成的开始)中形成中胚层。