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The Endowment for Human Development
The Endowment for Human Development
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The Rapidly Growing Brain


6 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Script: By 6 weeks the cerebral hemispheres are growing disproportionately faster than other sections of the brain.

The embryo begins to make spontaneous and reflexive movements. Such movement is necessary to promote normal neuromuscular development.

All ages referenced to fertilization, not last menstrual period.
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