MCQ Physiology Answer 33
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The correct answer is C.
The corpus luteum secretes estrogens, progesterone, and relaxin. hCG, secreted by the syncytiotrophoblast lining the placental villi, maintains the corpus luteum during the first trimester of pregnancy.
Antidiuretic hormone (vasopressin; choice A) does not play a significant role during pregnancy.
FSH (choice B) acts on granulosa cells to promote the conversion of androstenedione to estradiol.
LH (choice D) acts on theca cells to promote androstenedione secretion.
Progesterone (choice E) is important for maintaining the pregnancy, however, it does not act to maintain the corpus luteum.
Category: Physiology MCQs
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