Zoology - Human Reproduction Question with Solution | TestHub

FSH causes the development of Graafian follicle which releases estrogen. Estrogen regulates the action of FSH by a negative feedback action. Increase in the blood concentration of estrogen stimulates the pituitary to release LH (LH surge) to cause ovulation. After ovulation LH causes the development of corpus luteum which releases progesterone. Progesterone regulates the action of LH by a negative feedback action. As long as progesterone is high a new cycle doesn't begin. It prevents release of FSH by the pituitary.