Female ovulation usually a few days

The process by which the egg and its surrounding granulosa cells are expelled together is called ovulation, which takes only one day for a woman to ovulate. Ovulation process includes the first mitosis of oocyte and egg ejection activity. Due to the regulatory effect of estradiol secreted by mature follicle on hypothalamus, GnRH is released in large quantities, which then causes pituitary to release gonadotropin, showing LH/FSH peak. This ovulation peak and progesterone cooperate to activate protease activity, so that part of collagen on follicle wall is digested to form ovulation pores, which promotes egg ejection. When the follicle develops into a dominant follicle and all conditions are appropriate, the oocyte ejection is rapid and can be completed within 1 day.