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  2. Menstrual cycle - Wikipedia

    en.wikipedia.org/wiki/Menstrual_cycle

    Menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance of the lining of the ...

  3. Menstruation - Wikipedia

    en.wikipedia.org/wiki/Menstruation

    Diagram illustrating how the uterus lining builds up and breaks down during the menstrual cycle Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone ...

  4. Luteal phase - Wikipedia

    en.wikipedia.org/wiki/Luteal_phase

    Menstrual cycle. The menstrual cycle is on average 28 days in length. It begins with menses (day 1–7) during the follicular phase (day 1–14), followed by ovulation (day 14) and ending with the luteal phase (day 14–28).

  5. Metaformic Theory - Wikipedia

    en.wikipedia.org/wiki/Metaformic_Theory

    The earliest form of counting "artifacts are menstrual calendar bones, notched with correct lunar cycles, tabulating pregnancy and menstruation." [ 10 ] The prehistoric calendar bones include the Ishango bone , the most well known, which was discovered on the shore of a lake in Zaire, Africa, and represented a six-month lunar calendar.

  6. CycleBeads - Wikipedia

    en.wikipedia.org/wiki/CycleBeads

    CycleBeads, a color-coded string of beads that represents the days of a woman's cycle, helps an individual use the Standard Days Method, by helping her track her cycle days. Starting the first day of her period, she moves a band to the red bead then to a new bead every day.

  7. Menstrual disorder - Wikipedia

    en.wikipedia.org/wiki/Menstrual_disorder

    Menstrual Cycle including Menstrual phase (often referred to as "period") A menstrual disorder is characterized as any abnormal condition with regards to a woman's menstrual cycle. There are many different types of menstrual disorders that vary with signs and symptoms, including pain during menstruation, heavy bleeding, or absence of menstruation.