The Central Nervous System ( CNS ) and memory in the fetus develop from the ectoderm following fertilization via a process called neurulation.
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Positive pressure, created by the closure of anterior and posterior neuropores of the neural tube during neurulation, is a requirement of brain development.
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Beginning in the future neck region, the neural folds of this groove close to create the neural tube ( this form of neurulation is called primary neurulation ).
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Beginning in the future neck region, the neural folds of this groove close to create the neural tube ( this form of neurulation is called primary neurulation ).
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The neural crest cells are of ectodermal origin rather than mesodermal or endodermal and arise during the process of neurulation, the time at which the dorsal hollow nerve cord forms.
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With the development of research and laboratory techniques there have been major advances in the study of neurulation and the development and role of the neural plate in a growing embryo.
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If you're really keen, look at Neurulation, but that's rather a technical article .-gadfium 09 : 29, 19 August 2006 ( UTC)
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During primary neurulation, the notochord cells of the mesoderm signal the adjacent, superficial ectoderm cells to reposition themselves in a columnar pattern to form cells of the ectodermal neural plate.
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Initially, the left and right sides of the basal plate are continuous, but during neurulation they become separated by the floor plate, and this process is directed by the notochord.
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The most anterior ( front, or cranial ) part of the neural plate, the prosencephalon, which is evident before neurulation begins, gives rise to the cerebral hemispheres and its later cortex.
