In normally pregnant woman, gonadotropin activity shows high level of

Circulating FSH and LH to stimulate implantation of embryo in uterus

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Circulating hCG to stimulate endometrial thickening

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Circulating hCG to stimulate estrogen and progesterone synthesis

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FSH and LH to stimulate endometrial thickening

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Solution

The correct option is B Circulating hCG to stimulate endometrial thickening
The placenta is a cushion-like tissue which facilitates the supply of oxygen and nutrients to the embryo and also the removal of carbon dioxide and excretory waste materials produced by the embryo. It also acts as an endocrine tissue and produces several hormones such as human chorionic gonadotropin, human placental lactogen, estrogens, progesterone and relaxing.
So, the correct option is 'Circulating hCG to stimulate endometrial thickening'.

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