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The Endowment for Human Development
The Endowment for Human Development
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The Maturing Heart


6 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Script: Het vierkamerig hart is grotendeels compleet. Het hart slaat nu gemiddeld 167 keer per minuut.

Geregistreerde elektrische activiteit van het hart na 7 1/2 weken toont een golfpatroon dat vergelijkbaar is met dat van volwassenen.

All ages referenced to fertilization, not last menstrual period.
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Nipple Formation
Nipple Formation
Hand Movement
Hand Movement
The Maturing Heart
The Maturing Heart
The External Ear
The External Ear
Hiccups & Startle Response
Hiccups & Startle Response
Joining Hands
Joining Hands
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