A) sudden reduction of FSH
B) sudden increase of LH
C) sudden reduction of oestrogen and progesterone
D) None of the above
Correct Answer: C
Solution :
The corpus luteum of ovary plays an important role in the preparation of endometrium for the implantation of fertilized egg by secreting oestrogen and progesterone hormone. If the egg is not fertilized then the corpus luteum begins to degenerate and stops production of progesterone and oestrogen, which causes shedding of endometrium living with menstrual bleeding.
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