The image is a detailed diagram depicting the ovarian and uterine cycles over a 28-day period, alongside hormone level fluctuations. At the top, the ovarian cycle is divided into follicular phase, ovulation on day 14, and luteal phase, showing stages from primordial follicles to corpus luteum and its degeneration. The middle graph plots hormone levels of LH, FSH, estrogen, and progesterone, highlighting their peaks, especially around ovulation. The bottom section illustrates the uterine cycle, including the menstrual phase with shedding of the functional endometrial layer, the proliferative phase with thickening due to estrogen, and the secretory phase with glandular changes preparing for implantation.