Select the correct option describing gonadotropin activity in a normal pregnant female.
A
High level of FSH and LH stimulates the thickening of endometrium.
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B
High level of FSH and LH facilitate implantation of the embryo.
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C
High level of hCG stimulates the synthesis of estrogen and progesterone.
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D
High level of hCG stimulates the thickening of endometrium.
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Solution
The correct option is C High level of hCG stimulates the synthesis of estrogen and progesterone.
Human chorionic gonadotrophin is the embryonic hormone, which ensures the corpus luteum continues to produce progesterone throughout the first trimester of pregnancy.
As well as maintaining progesterone production from the ovary, human chorionic gonadotrophin may also play a role in making sure the lining of the uterus (endometrium) is ready to receive the implanting embryo. hCG may also promote the production of other steroids (e.g., estrogen) and protein (e.g., relaxin, inhibin A) hormones whose actions in the uterus may facilitate gestation.
So, the correct answer is 'High level of hCG stimulates the synthesis of estrogen and progesterone.'