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notochord    音标拼音: [n'otək,ɔrd]
n. 脊索

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notochord
n 1: a flexible rodlike structure that forms the supporting axis
of the body in the lowest chordates and lowest vertebrates
and in embryos of higher vertebrates


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  • Notochord - Wikipedia
    In vertebrates the notochord is an embryonic structure that disintegrates, as the vertebrae develop, to become the nucleus pulposus in the intervertebral discs of the vertebral column In non-vertebrate chordates, the notochord persists during development
  • The notochord: structure and functions - PMC
    The notochord is an embryonic midline structure common to all members of the phylum Chordata, providing both mechanical and signaling cues to the developing embryo In vertebrates, the notochord arises from the dorsal organizer and it is critical for proper vertebrate development
  • Notochord | Embryonic, Vertebrate, Development | Britannica
    Notochord, flexible rodlike structure of mesodermal cells that is the principal longitudinal structural element of chordates and of the early embryo of vertebrates, in both of which it plays an organizational role in nervous system development
  • Notochord: Definition, Function and Structure | Biology Dictionary
    The notochord is an elastic rod which extends through Chordate organisms, providing rigid support In the more derived Chordates, the Vertebrates, the notochord is replaced by the vertebral column, and becomes the cartilaginous substance between vertebrae
  • What Is the Notochord in Humans and What Happens to It?
    The notochord is a flexible, rod-like scaffold that forms in the earliest stages of embryonic life It serves as the primitive backbone, providing the primary axial support for the developing embryo long before the spinal column is formed
  • The notochord: Current Biology - Cell Press
    What is the notochord? The notochord is the defining structure of the phylum Chordata, which includes all vertebrates In its ‘mature’ state the notochord is a rod of large cells constrained by a thick extracellular sheath and positioned between the developing spinal cord and gut
  • Notochord - an overview | ScienceDirect Topics
    A Notochord The notochord is a transient rod-like structure located at the developing midline, ventral to the neural tube and dorsal to the dorsal aorta It is composed of a single column of large vacuolated cells surrounded by a thick BM
  • Notochord Definition, Development Function - Study. com
    What is a notochord in simple terms? The notochord is a rod-like structure made of a cartilage-like substance that is found in the early embryonic stages of all chordates
  • Notochord - Embryology
    It is an early forming midline structure in the trilaminar embryo mesoderm layer initially ventral to the ectoderm, then neural plate and finally neural tube This is a transient embryonic anatomy structure, not existing in the adult, required for patterning the surrounding tissues
  • Notochord: Structure, Function, and Role in Development - Vedantu
    Notochord shows the chordate structure in the body and is an essential part of vertebrate development in the body It presents as a midline signal, which figures around the tissues





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