The follicular phase is characterized because the FSH hormone will stimulate the development of several ovarian follicles. However, only the dominant follicle, chosen by selection and dominance mechanisms, will be the one to complete this development and expel a mature oocyte at the time of ovulation.
The development of this follicle will cause its granulosa cells to secrete large amounts of estrogen, so that the levels of this hormone increase as the follicular phase progresses, finally triggering the LH peak that will lead to ovulation.
Read the full article on: What is the follicular phase of the menstrual cycle. How long does it last? ( 34).
By Silvia Azaña Gutiérrez B.Sc., M.Sc. (embryologist) and inviTRA Staff.
Last Update: 12/23/2022
