Levels of which of the following hormones are high during the first trimester of pregnancy and decline during the second and third trimesters?

Question

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[Chapter 7, X F 2; Figure 7.20]. During the first trimester of pregnancy, the placenta produces human chorionic gonadotropin (HCG), which stimulates estrogen
and progesterone production by the corpus luteum. Peak levels of HCG occur at about the 9th gestational week and then decline. At the time of the decline in HCG, the placenta assumes the responsibility for steroidogenesis for the remainder of the pregnancy.

Levels of Which of the Following Hormones Are High During