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LenaWriter [7]
3 years ago
13

When does the nervous system begin to form?

Biology
1 answer:
djverab [1.8K]3 years ago
3 0
The human nervous system starts to form very early in the embryo’s development. At the end of the gastrulation phase, an elongated structure, the notochord, is laid down. The embryo thereby changes from a circular organization to an axial one—a critical step in the development of its nervous system.
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