What is ovulation?
Ovulation is the release of egg from the ovaries.
In humans this event occurs when the de Graaf's follicles rupture and release the secondary oocyte ovarian cells.
Ovulation occurs about midway through the menstrual cycle, after the follicular phase. The process of ovulation is controlled by the hypothalamus of the brain and through the release of hormones secreted in the anterior lobe of the pituitary gland.