Placentation 2 Flashcards
1
Q
What does the placenta form from?
A
Chorion
2
Q
What other membrane develops around the embryo?
A
Amnion
3
Q
When is amnion starting to form and what is its function?
A
2nd week
Attaches to the edge of inner cell mass or embryonic disc
4
Q
What does the amniotic fluid start to do?
A
Fill the space between the embryonic disc and amnion
5
Q
What are the 3 functions of the amniotic fluid?
A
Compression of the embryo
cushions embryo from mothers movements
maintains stable temperature
6
Q
How does the umbilical cord form?
A
From portions of the amnion enveloping tissues on the embryo-mainly the connecting stalk
7
Q
What does the umbilical cord connect?
A
The umbilicus of embryo to the placenta
8
Q
What does the umbilical cord do?
A
Exchanges blood between embryo and placenta
