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The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
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Responds to Sound


5 months

From The Biology of Prenatal Development.Buy Now

Script: 5个月

到20周，在完全 发育的内耳里， 听觉器官耳蜗 已经达到成年人 的 尺寸。 从现在开始， 胎儿对各种 声音作出反应。

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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Bronchial Tree
Bronchial Tree
Circadian Rhythms
Circadian Rhythms
Responds to Sound
Responds to Sound
Skin and Hair
Skin and Hair
Age of Viability
Age of Viability
4D Ultrasound
4D Ultrasound
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