part of part_of external ectoderm 外胚层 (or external ectoderm) forms the following structures: Skin Epithelium of the mouth and nasal cavity saliavary glands, and glands of mouth and nasal cavity Enamel - as a side note dentin and dental pulp are formed from ectomesenchyme which is derived from ectoderm Epithelium of pineal and pituitary glands Lens and cornea of the eye Apical ectodermal ridge inducing development of the limb buds of the embryo. Sensory receptors in epidermis EHDAA2:0001968 EHDAA:1494 EHDAA:350 EHDAA:4784 EHDAA:4790 EHDAA:4796 EHDAA:7860 EMAPA:16096 FMA:87656 The surface (external) layer of ectoderm which begins to proliferate shortly after separation from the neuroectoderm. UBERON:0000076 UMLS:C1515087 merge with non-neural. In vertebrates, the ectoderm has three parts: external ectoderm (also known as surface ectoderm), the neurectoderm (neural crest, and neural tube) surface (external) ectoderm surface (external) ectoderm surface ectoderm surface ectoderm uberon (或外部外胚层)形成以下结构：口腔和鼻腔涎腺的皮肤上皮，以及口腔和鼻腔牙釉质的腺体--作为附注，牙本质和牙髓源于松果体和垂体晶状体和眼顶部外胚层嵴的角膜，该角膜诱导胚胎肢芽的发育。表皮上的感觉受体。 与非神经融合。 在脊椎动物中，外胚层有三部分：外胚层（也称为表面外胚层），神经外胚层（神经嵴和神经管） 从神经外胚层分离后不久开始增殖的外胚层表面（外部）层。 表面外胚层(surface ectoderm) 表面外胚层(surface ectoderm) 表面（外）胚层 表面（外）胚层 tissue 组织 unilaminar epithelium 单层上皮 embryo 胚胎 ectoderm 外胚层 embryonic tissue 胚胎组织