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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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Response to Light

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From The Biology of Prenatal Development.

Script: 到26週，眼睛生產眼淚。

在27週，瞳孔對光作出反應。這種反應在一生中控制到達視網膜的光量。

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

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4D Ultrasound

4D Ultrasound

Sense of Smell

Sense of Smell

Response to Light

Response to Light

4D Ultrasound

4D Ultrasound

4D Ultrasound

4D Ultrasound

4D Ultrasound

4D Ultrasound

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