You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is In this normal menstrual cycle graph, the mark 'X' represents levels of which hormone? and explain in detail?
Green line: LH surges and peaks before ovulation Blue line: FSH : responsible for follicular development in the early phase of the cycle, increases gradually upto ovulation Red line: Estrogen : increases steadily in follicular phase secondary to follicular development as estrogen is produced by the follicle and is responsible for growth of the endometrium in follicular phase Dotted line (marked X ): Progesterone: stas to rise after ovulation (after formation of corpus luteum), responsible for stabilisation of endometrium. Withdrawl of progesterone leads to endometrial shedding (menstrual bleed)