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16 Cards in this Set
- Front
- Back
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Fertilization-->zygote
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Day 0
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implantation of blastocyst-->hcg secretion begins
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within week 1
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bilaminar disk (epiblast, hypoblast)
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within week 2
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Missed period
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between weeks 2 and 3
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Gastrulation
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within week 3
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Neural tube formed by ectoderm and closed
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by week 4
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Organogenesis
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Weeks 3-8
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highest susceptibility to teratogens
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weeks 3-8
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Heart begins to beat
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Week 4
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Primitive streak
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Within week 3
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notochord begins to form
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within week 3
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neural plate begins to form
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within week 3
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Upper and lower limb buds begin to form
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week 4
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fetal movement
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week 8
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looks like a baby
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week 8
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genitalia have male/female characteristics
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week 10
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