Pre-implantation Embryo Development Flashcards
(6 cards)
1
Q
What are the challenges around studying pre-implantation embryo development?
A
Ethics
Species differences
Not much tissue to work with
Availability
Needs approval
Embryos dont stop changing
2
Q
The steps of embryo development from zygote to implantation?
A
The zygote divides until the 8 cell stage where it undergoes compaction, and cavitation to form the blastocyst.
The blastocyst can then implant
3
Q
What is compaction?
A
Intercellular organisation of the embryo
4
Q
How does compaction happen?
A
E-cadherin evenly distributes between all cells causing them to flatten.
5
Q
What is polarisation?
A
intracellular organisation of the blastomere
6
Q
What does polarisation make?
A
Makes two distinct domains within the cell
