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← Human Body & HealthFollowing fertilization, which crucial feedback mechanism elevates progesterone levels?
A)Human chorionic gonadotropin (hCG) stimulation✓
B)Prolactin inhibition of ovarian follicles
C)Luteinizing hormone (LH) direct inhibition
D)Estrogen negative feedback on hypothalamus
💡 Explanation
Successful implantation depends on sufficient progesterone. Because the corpus luteum requires continued stimulation post-fertilization, the implanting blastocyst releases hCG; therefore, the elevated hCG maintains the corpus luteum's progesterone secretion, rather than premature corpus luteum regression and loss.
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