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This video presents a functional diagram of the production of sex hormones in women and the regulation of the ovarian (ovary) and uterine (uterus) cycles in women. The hypothalamic-pituitary complex is activated at the time of puberty to activate the production of female sex hormones: estrogens and progesterone. The hypothalamus produces GnRH which activates the pituitary gland. The pituitary gland produces FSH which activates the growth of the follicle (D1 to D14: follicular phase) but also produces LH (D14 to D28: luteal phase) which maintains the corpus luteum. A peak of LH and FSH is also observed on the 14th day: it allows ovulation. In the ovary, the follicles produce estrogens which act on the uterus to activate the endometrium or uterine lining (thickening, vascularization). The corpus luteum produces estrogen and progesterone which facilitate gestation (pregnancy) by preventing contractions of the myometrium (muscular part of the uterus). Source: http://m.pourcher.free.fr Recommended level: 2ndes