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Question

Which one of the following is the correct matching of the events occurring during menstrual period?

A
Menstruation, breakdown of myometrium and ovum not fertilized
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B
Ovulation, LH and FSH attain peak level and sharp fall in the secretion of Graffian follicle
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C
Proliferative phase, rapid regeneration of myometrium and maturation of Graafian follicle
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D
Development of corpus luteum, secretory phase and increased secretion of progesterone
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Solution

The correct option is D Development of corpus luteum, secretory phase and increased secretion of progesterone
Ovulation is followed by the luteal phase in ovary wherein, LH stimulates the formation of corpus luteum from ovulated Graafian follicle which in turn secretes estrogens and progesterone. As the same time, secretory phase in the uterus (day 15-28) is marked by uterine endometrium thickening, under the influence of progesterone as secreted by corpus luteum, to prepare it for implantation. Therefore, the correct answer is option D.

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