Lecture 17: Placenta Flashcards
1
Q
When does implantation commence?
A
≈ 6 days post-fertilisation.
2
Q
What happens around day 7?
A
The trophoblast differentiates into 2 layers:
- Cytotrophoblast (inner layer)
- Synctiotrophoblast (outer layer)
3
Q
What does the inner cell mass differentiate into?
A
- Epiblast
- Hypoblast
Bilayared embryonic disc.
4
Q
When is implantation completed?
A
Day 10.
5
Q
When does the embryo start to develop?
A
Day 12.
