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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: 6周

到6周,大脑半球 生长很快, 与头脑其它部分 的比率失调。

胚胎开始做 自发和反射运动。 这种运动是促进 正常神经肌肉发育 所必要的。

All ages referenced to fertilization, not last menstrual period.
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