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ectoderm    
n. 外胚层;外细胞层

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  • Ectoderm - Wikipedia
    The ectoderm is one of the three primary germ layers formed in early embryonic development It is the outermost layer, and is superficial to the mesoderm (the middle layer) and endoderm (the innermost layer) [1]
  • Ectoderm: What It Is and What It Becomes - Biology Insights
    The ectoderm is one of the three primary germ layers that arise early in embryonic development It is the outermost layer, forming the foundation for many of the body’s external features and a large portion of the nervous system
  • Ectoderm - Definition, Formation, Function and Quiz | Biology Dictionary
    The ectoderm is a germ layer, or tissue layer, that forms in an animal embryo during development As the name suggests, the ectoderm is the germ layer that covers the outside of the embryo ('ecto' meaning outside)
  • Ectoderm - Embryology
    The top layer of the early trilaminar embryo germ layers (ectoderm, mesoderm and endoderm) formed by gastrulation The ectoderm can be though of as having 4 early regions: neural plate, neural crest, surface ectoderm and placodes
  • Ectoderm | Epidermis, Neural Crest Embryonic | Britannica
    ectoderm, the outermost of the three germ layers, or masses of cells, which appears early in the development of an animal embryo
  • Lecture - Ectoderm Development - Embryology
    Covering the same period as the previous mesoderm lecture, lets now look at changes to the ectoderm The ectoderm will from the entire nervous system (both central and peripheral), the epidermis of the skin and in the head region specialised placodes
  • Embryology, Ectoderm - StatPearls - NCBI Bookshelf
    This article will give a brief overview of the ectoderm, which is one of the three layers of the early tri-laminar embryo formed by gastrulation during early development Normal embryonic development requires proper formation of the three layers and complex signaling between them
  • Ectoderm | Embryo Project Encyclopedia
    Ectoderm is one of three germ layers—groups of cells that coalesce early during the embryonic life of all animals except maybe sponges, and from which organs and tissues form
  • Ectoderm, Mesoderm, and Endoderm: The Three Germ Layers
    In most animals, development proceeds from three primary germ layers: the outer ectoderm, the middle mesoderm, and the inner endoderm Their formation establishes the basic body plan and initiates the development of a complete organism, with each layer fated to generate specific structures
  • What Do the Ectoderm, Mesoderm, and Endoderm Form?
    The cells that remain on the surface, which did not migrate inward, become the ectoderm (the outermost layer) The ectoderm, meaning “outer skin,” forms structures that interact directly with the external environment It is divided into the neuroectoderm and the surface ectoderm





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