week3 - Development of Brain Cleavage Cleavage The division...

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Development of Brain
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Cleavage Cleavage The division of cells in the early embryo. The zygote undergo many cell cycles, pro -ducing a cluster of cells and form the Blastocyst.
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Gastrulation Gastrulation is a phase early in the development of animal embryos, during which the morphology of the embryo is dramatically restructured into 3 layers.
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Neurulation The formation of the dorsal nerve cord and the eventual formation of the central nervous system. Includes: Primary neurulation Secondary neurulation
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Primary Neurulation The process of the flat neural plate folding into the cylindrical neural tube
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Secondary Neurulation the cells of the neural plate form a cord- like structure that migrates inside the embryo and hollows to form the tube.
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Some terms Neural Plate: the first step of neurulation, created by a thickened flat, forms neural tube and neural crest, and most of neurons and glia cells in the CNS.
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