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The Endowment for Human Development
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Blink-Startle Response


6 months

From The Biology of Prenatal Development.Buy Now

Script: 6 ماه

در هفته 24 پلک ھای چشم دوباره باز می شود و آن رویان یک پاسخ چشمک جھشی را نمایش می دھد. این یک عکس العمل به اصوات بلند ناگھانی، بطور نمونه در رویان ھای زنان در ابتدا رشد پیدا می کند.

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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