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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, 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
  • 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
  • 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)
  • 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 - an overview | ScienceDirect Topics
    From these studies and what we know about pluripotent states, we can define definitive ectoderm cells as cells that arise following a primed or epiblast-like state and respond to BMP signaling by transitioning to a nonneural ectoderm fate instead of a mesodermal or neural fate
  • Ectoderms | definition of Ectoderms by Medical dictionary
    The outer layer of cells in the embryo, after establishment of the three primary germ layers (ectoderm, mesoderm, endoderm), the germ layer in contact with the amnionic cavity
  • ECTODERM Definition Meaning - Merriam-Webster
    The meaning of ECTODERM is the outermost of the three primary germ layers of an embryo that is the source of various tissues and structures (such as the epidermis, the nervous system, and the eyes and ears)
  • 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





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