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Embryo Stages Animations Review Questions  Summary Stereo Views Animation |
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- Length: 1 - 1.5 mm
- Hensons node and primary groove.
- The curved germ disc lies between a yolk sac with blood islands and a crescent shaped amniotic cavity.
- The body stalk bends back and blends with the chronic mesoblast.
- Ovulation age: 17 - 19 days
Question: What occurs to the body stalk?
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Developmental Stages in Human Embryos by Ronan O'Rahilly and Fabiola Müller. Published by Carnegie Institution of Washington, Publication 637. 1987. |
Stage 7
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Stage 9
 Stage 8 Stereo Views
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