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Embryo Stages Animations Review Questions |
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- 0.1 - 0.2 mm in diameter
- Two-cell ovum recovered from the Fallopian tube.
- Smaller upper polar body between the two blastomeres.
- Spherical and surrounded by the zona pellucida.
- The probable ovulation age is 2 - 3 days.
Question: Where is the upper polar body located?
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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 1
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Stage 3
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