Developmental Biology 神经管形成的起始:来自背部中胚层的信号诱导预 置神经板边缘的细胞的背测收缩,而预置的表皮细胞向 中线移动,使表皮与神经板交接处凸起形成神经褶。 mh MtMMliDy apical constriction cell movement Fig 8.29 Change in cell shape and cell crawling may drive ectoderm. This may be partly responsible for causing the neural neural folding. Cells at the edge of the neural plate change their folds to develop shape and appear to crawl along the undersurface of the adjacentDevelopmental Biology 神经管形成的起始：来自背部中胚层的信号诱导预 置神经板边缘的细胞的背测收缩，而预置的表皮细胞向 中线移动，使表皮与神经板交接处凸起形成神经褶