How FSH, LH, and Progesterone Shape the Cycle

The menstrual cycle is controlled by GnRH, FSH, LH, estrogen, and progesterone. GnRH, or gonadotrophin-releasing hormone, starts a pulsatile release pattern at puberty. This pattern tells the anterior pituitary gland to release follicle-stimulating hormone (FSH) and luteinizing hormone (LH).

GnRH...

The gonadotrophin-releasing hormone, GnRH, and the gonadotrophins regulate endometrial changes during the menstrual cycle.

Starting at puberty, GnRH follows a monthly release pattern. Its increase stimulates the anterior pituitary to predominantly secrete follicle-stimulating hormone, or F-S-H, along with consistent levels of luteinizing ...