A) placenta
B) allantois
C) chorion
D) amnion
Correct Answer: A
Solution :
The corpus luteum remains active during early pregnancy producing progesterone because of hCG. However, by the seventh week of development in pregnancy, the placenta takes over the production of progesterone and corpus luteum finally degenerates. Allanthois, chorion and amnion are outer layers of embryo developing from blastocyte cells.You need to login to perform this action.
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