Question:

Which of the following statements is correct regarding menstrual cycle?

Proliferative phase is characterised by the increased production of progesterone.

LH induces rupturing of graafian follicle.

Both LH and FSH attain a peak level in secretory phase.

Corpus luteum secrets large amount of estrogen.

Solution:

During follicular phase (proliferative phase), follicle stimulating hormone (FSH) secreted by the anterior lobe of the pituitary gland stimulates the ovarian follicle to secrete estrogens. Corpus luteum secretes a large amount of progesterone in the secretory phase. Both LH and FSH attain a peak level in the ovulatory phase (mid of the cycle).