High estrogen in the absence of progesterone in the follicular phase

Question

Quizplus · Accepted Answer

High estrogen levels in the absence of progesterone during the follicular phase of the menstrual cycle lead to increased GnRH release, are necessary for the LH and FSH surge, increase the sensitivity of gonadotropes to GnRH, and produce a positive feedback on GnRH release as well as LH and FSH release. This positive feedback loop is crucial for the ovulation process.

High Estrogen in the Absence of Progesterone in the Follicular