Developmental Anatomy
Stage 7: Lab Manual - Horizon 7
- 0.2 mm in size.
- Implanted Ovum.
- Primitive unbranched villi.
- Distinct yolk sac.
- Germ disc is oval shaped.
- Axial differentiation is just appearing.
- Ovulation Age: 13 - 15 days.
Developmental Stages in Human Embryos by Ronan O'Rahilly and Fabiola Müller.
Published by Carnegie Institution of Washington, Publication 637. 1987.
Stage 7 (PDF 434 KB)
QUESTION: What is the main characteristic of a stage 7 embryo?
