Question

Which of the following is the correct sequence of hormonal increase beginning with menstruation?

• A. Estrogen, progesterone, FSH
• B. FSH, progesterone, Estrogen
• C. FSH, Estrogen, Progesterone
• D. Estrogen, FSH, progesterone

Answer 1

Answer: (D)

Estrogen, FSH, progesterone

• The end of menstruation is marked by the gradual increase in the level of estrogen (occurring during the follicular phase which starts at day 1 of menstruation and ends at ovulation) due to which the blood flow stops and the lining of the endometrium thickens.
• During the follicular phase, FSH is released to stimulate the release of around 5-20 follicles (this occurs at around day 10 of a 28 days cycle). Among them, only a single follicle contains the immature egg the release of which is stimulated by another hormone called the LH. This is called the ovulatory phase (usually occurring around day 14).
• The graffian follicle has to rupture to release the egg. This ruptured follicle becomes corpus luteum then remains to release progesterone and small amounts of estrogen for the maintenance of the lining of the uterus for implantation.

So, the correct answer is option D.