extra embryonic membranes Flashcards
(5 cards)
1
Q
4 fetal membranes
A
Amnion
Chorion
Yolk Sac
Allantois
2
Q
amnion
A
The amnion lines the amniotic sac containing the fetus
The fibrous chorion lies deep to the amnion
The chorion rests on a layer of trophoblastic cells
3
Q
yolk sac
A
disappears at around 18 weeks and is responsible for blood cell formation and GI tract formation
4
Q
allantois
A
is an outpouching of the yolk sac and its blood vessels become incorporated into the umbilical cord
5
Q
decidua
A
the maternal part of the placenta
