Neurulation
Transverse sections that show the progression of the neural plate into the neural tube.
This is a series of illustrations of transverse sections that show the progression of the neural plate into the neural tube. The first illustration shows the neural plate as flat, laying atop the mesoderm and notochord. The second shows the neural plate bending down, with the tow tends joining at the neural plate borders, which are now referred to as the neural crest. The third shows the closure of the neural tube and how this disconnects the neural crest from the epidermis. The neural crest cells differentiate to form most of the peripheral nervous system. Finally, the notochord degenerates and other mesoderm cells differentiate into the somites.
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"Neurulation."
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