CineReady for Birth |
| Compre ahoraDe La biología del desarrollo prenatal |
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Guión: The fetus initiates labor by releasing large amounts of a hormone called estrogen and thus begins the transition from fetus to newborn. Labor is marked by powerful contractions of the uterus, resulting in childbirth. |
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Todas las edades en referencia a la fecundación, no al último período menstrual.
Un mes = 4 semanas.
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Ready for Birth
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DNA
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To the Earth and Back
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Fertilization 1
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Fertilization 2
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Cell Division
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