MENSTRUAL CYCLE Hormone Gland produced by Function Gonadotropin-releasing hormone (GnRH) Hypothalamus stimulates the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the pituitary gland Follicle stimulating hormone (FSH) pituitary stimulates the growth of follicles in the ovaries, which secrete oestrogen Luteinising Hormone (LH) pituitary and works with FSH to cause ovulation and later, the release of oestrogen and progesterone Leutotrophic Hormone (LTH) pituitary initiate secretion of milk by the mammary glands, It also acts to maintain the corpus luteum of the ovary Oestrogen Ovarian follicle hormone secreted by ovarian follicles that stimulates thickening of the uterine wall, maturation of an egg, and