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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: El cor amb les seves 4 cavitats està en gran part complet. Com a mitjana, el cor batega ara 167 vegades per minut.

L'activitat elèctrica del cor registrada a les 7 setmanes i mitja mostra un patró d'ones similar al d'un adult.

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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