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The Endowment for Human Development
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The Fetal Period


9 weeks

From The Biology of Prenatal Development.Buy Now

Script: From the completion of 8 weeks until the end of pregnancy, "the developing human is called a fetus," which means "unborn offspring." During this time, called the fetal period, the body grows larger and its systems begin to function.

All ages referenced to fertilization, not last menstrual period.
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