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Neurogenesis - Anatomy & Physiology (view source)

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==Secondary Neuralation==

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*Occurs posteriorly from the lumbar level onwards.

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#The neural plate descends ventrally and medially.

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#Cells of the neural plate condense and form a solid rod called the '''medullary cord'''.

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#It is then made hollow by cavitations which join up to make a lumen.

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