Describe the process of the menstrual cycle

In the first stage of the menstrual cycle FSH is released by the pituitary gland. It then travels in the blood to the ovaries where it matures an egg and triggers the ovaries to make oestrogen. Oestrogen causes the lining of the uterus to thicken and stops the pituitary gland from releasing anymore FSH, instead it will release LH. LH triggers ovulation, and once the ovary has released an egg, the ovary produces the hormone progesterone. Progesterone stops the pituitary gland from releasing LH to prevent more eggs maturing or being released, and it keeps the lining of the uterus thick in case of a fertilised egg being implanted.