Appendix 1
The Chronological Development of The Unborn Child

 

57th Day

 

Timing

Source
The fetal period begins on day 57 after fertilization and ends at birth. The tissues and organs that were formed during the embryonic period continue to grow during the fetal period, but the changes aren't as pronounced. Ultrasonic measurements are used to measure embryonic growth. Day 57 Moore, p 3


 


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