Placental takeover of hormone production occurs at approximately which gestational age?

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Multiple Choice

Placental takeover of hormone production occurs at approximately which gestational age?

Explanation:
Placental takeover of hormone production happens when the placenta becomes the primary source of progesterone and estrogen to sustain the pregnancy, taking over from the corpus luteum. In early pregnancy, the corpus luteum keeps producing progesterone because hCG from the developing placenta supports it. By about 8 weeks gestation, the placenta has developed enough to make sufficient progesterone and estrogen on its own, and the corpus luteum regresses. So the takeover occurs around 8 weeks. The earlier options are too soon for the placenta to assume hormonal support, and 20 weeks is well past the time when the placenta first takes over.

Placental takeover of hormone production happens when the placenta becomes the primary source of progesterone and estrogen to sustain the pregnancy, taking over from the corpus luteum. In early pregnancy, the corpus luteum keeps producing progesterone because hCG from the developing placenta supports it. By about 8 weeks gestation, the placenta has developed enough to make sufficient progesterone and estrogen on its own, and the corpus luteum regresses. So the takeover occurs around 8 weeks. The earlier options are too soon for the placenta to assume hormonal support, and 20 weeks is well past the time when the placenta first takes over.

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