<P> Estrogen levels peak towards the end of the follicular phase . This causes a surge in levels of luteinizing hormone ( LH ) and follicle - stimulating hormone ( FSH ) . This lasts from 24 to 36 hours , and results in the rupture of the ovarian follicles , causing the oocyte to be released from the ovary . </P>
<P> Estrogen levels peak towards the end of the follicular phase . This causes a surge in levels of luteinizing hormone ( LH ) and follicle - stimulating hormone ( FSH ) . This lasts from 24 to 36 hours , and results in the rupture of the ovarian follicles , causing the oocyte to be released from the ovary . </P>
which hormone stimulates the release of the ovum from the ovary
which hormone stimulates the release of the ovum from the ovary
luteinizing hormone follicle - stimulating hormone
luteinizing hormone follicle - stimulating hormone