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  1. Neural tube - Wikipedia

    • In the developing chordate (including vertebrates), the neural tube is the embryonic precursor to the central nervous system, which is made up of the brain and spinal cord. The neural groove gradually deepens as the neural folds become elevated, and ultimately the folds meet and coalesce in the middle line and convert the groove into the closed neural tube. In … 展开

    Development

    The neural tube develops in two ways: primary neurulation and secondary neurulation.
    Primary neurulation divides the ectoderm into three cell types:
    • The … 展开

    Structure

    Four neural tube subdivisions each eventually develop into distinct regions of the central nervous system by the division of neuroepithelial cells: the forebrain (prosencephalon), the midbrain (mesencephalon… 展开