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The Endowment for Human Development
The Endowment for Human Development
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Heart and Circulatory System


3 weeks

From The Biology of Prenatal Development.Buy Now

Script: Bi ẹjẹ akọkọ ba ti de inu apo ẹyin, iho ara ti ẹjẹ ngba yio farahan kaakiri lara ọmọ inu oyun naa, bẹẹ si ni ọkan, eyiti o ri rogodo, yio farahan bakanna.

O fẹrẹ jẹ lẹsẹkanna ni ọkan ti ndagbasoke ni kiakia yi yio sẹpo sori ara rẹ, bẹẹ si ni apo ọtọọtọ yio maa waye laarin ọkan naa.

Ọkan naa yio bẹrẹ sii mi lati ọsẹ kẹta ati ọjọ kan lẹhin idapọ ẹyin ọkọ ati aya.

Ẹya ara ti ngbe ẹjẹ kiri gbogbo ara jẹ ẹya ara akọkọ, tabi akojọpọ awọn ẹya ara ti o jọ ara wọn lati bẹrẹ sii S̩iS̩ẹ.

All ages referenced to fertilization, not last menstrual period.
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Early Embryonic Development
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Heart and Circulatory System
Heart and Circulatory System
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