noun🔗Share外胚层，外胚层组织。 Outermost 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."During embryonic development, the ectoderm differentiates to form the skin and brain. "在胚胎发育过程中，外胚层会分化形成皮肤和大脑。biologyanatomyphysiologyorganismanimalChat with AIVocabulary GamePractice Reading
