<prompt> Normal Menstrual cycle showsProgesterone levels are highest during the secretory phaseLH levels are lowest in the mid cycleFSH levels are highest during the luteal phaseEstradiol levels are highest during the midcycle  <response>: A Progesterone levels are highest during the secretory phase Secretory phase of endometrium is controlled by progesterone LH levels rises during mid cycle just prior to ovulation. FSH levels are reduced during duteal phase due to inhibin which inhibits further secretion of FSH by anterior pituitary and LH receptor to secrete LH. 