Developmental Anatomy
Stage 2: Lab Manual - Horizon II Segmenting Ovum
- 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.
Developmental Stages in Human Embryos by Ronan O'Rahilly and Fabiola Müller.
Published by Carnegie Institution of Washington, Publication 637. 1987.
Stage 2 (PDF 78 KB)
QUESTION: Where is the upper polar body located?
