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The Endowment for Human Development
The Endowment for Human Development
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Blink-Startle Response


6 months

From The Biology of Prenatal Development.Buy Now

Script: 6 חודשים

בגיל 24 שבועות, העפעפיים נפתחים מחדש והעובר מפגין תגובת מצמוץ-מבוהל. תגובה זו לרעש חזק ופתאומי, מתפתחת בדרך כלל מוקדם יותר בעוברים ממין נקבה.

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