what happens to corpus luteum after placenta takes over
Corpus luteum The introduction of prostaglandins at this point causes the degeneration of the corpus luteum and the abortion of the fetus. However, in placental animals such as humans, the placenta eventually takes over progesterone production and the corpus luteum degrades into a corpus albicans without embryo/fetus loss.
Amniotic fluid The fluid is absorbed through the fetal tissue and skin.[citation needed] After the 15th-25th week of pregnancy when the keratinization of an embryo's skin occurs,[citation needed] the fluid is primarily absorbed by the fetal gut.[1]