neural tube

Japanese: neural tube（英語表記）neuraltube

…When the upper lip of the blastopore invaginates, it forms the notochord and mesoderm, and also induces the adjacent ectoderm to form the neural plate. The neural plate forms the neural tube, which then gives rise to the brain, sensory organs, spinal cord, etc. On the other hand, if the upper lip of the blastopore is removed, the embryo does not develop normally, and if it is transplanted into another early blastocyst embryo, a secondary neural tube will be formed. …

From [Morphogenesis]

...Therefore, the morphogenesis of various tissues and organs formed from each region of the germ layer can be seen as a process in which two-dimensional germ layers change into three-dimensional structures such as tubes and cysts. For example, the neural tube is formed when both ends of the neural plate rise dorsally and fuse in the midline. Next, the wall of the neural tube contracts and protrudes outward in various places to form the primordium of the brain vesicle and sensory organs. ...

From the Brain

...The tubular brain is said to first appear in the larvae of protochordates. In individual development, the central nervous system begins in the neural tube. In humans, the neural tube is completed at the end of the fourth week of fetal development. ...

*Some of the terminology that mentions "neural tube" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…原口の上唇部は陥入すると脊索や中胚葉を形成するほか，隣接する外胚葉を神経板neural plateに誘導する。神経板は神経管neural tubeを経て脳，感覚器官，脊髄などを形成する。一方，原口上唇部を除去すると胚は正常に発生しないし，また，それを移植された他の初期囊胚には第2次の神経管が付加的に形成される。…

【形態形成】より

…したがって，胚葉の各部域から形成されるさまざまな組織や器官の形態形成は，二次元的な胚葉部分が管や囊胞などの三次元構造へ変化する過程と見ることができる。たとえば，神経板neural plateの両側端が背方にせり上がり正中で癒合することで神経管neural tubeは形成される。次に神経管壁が随所でくびれたり外方に突出することで，脳胞や感覚器官の原基が形成される。…