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

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2.Human Reproduction

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

Proliferative phase : Rapid regeneration of myometrium and maturation of Graafian follicle

Secretory phase : Development of increased secretion corpus luteum and of progesterone

Menstruation : Breakdown of myometrium and ovum not fertilised

Ovulation : $LH$ and $FSH$ attain peak level and sharp fall in the secretion of progesterone

(AIPMT-2009)

Solution

(b) : Secretory phase is also called as luteal phase. The luteinising hormone or $LH$ is secreted by the anterior lobe of pituitary gland. $LH$ causes ovulation. $LH$ stimulates cells of ovarian follicles to develop corpus luteum. Corpus luteum secretes large amount of progesterone.

Standard 12

Biology