NEET Biology question

During the bleeding phase of the menstrual cycle, the unfertilised secondary oocyte undergoes autolysis. The interplay of hormones responsible for this is

(A)Progesterone and oestrogen continue to cause hypertrophy of the endometrial lining
(B)Prolactin and LH levels cause regression of the corpus luteum
(C)Progesterone inhibits the release of LH from the pituitary, leading to regression of the corpus luteumCorrect
(D)Prolactin and oestrogen inhibit progesterone secretion, leading to sloughing off of the uterine lining

Answer: (C)

Solution

Progesterone from the corpus luteum exerts negative feedback that suppresses LH release; with LH withdrawn (and no hCG to sustain it in the absence of fertilisation), the

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Question ID VK-122453