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  1. Characteristics

    The first menstrual period occurs after the onset of pubertal growth, and is called menarche. The average age of menarche i… 展开

    Menstruation - Wikipedia

    • 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 levels, and is a sign that pregnancy has not occurred. The first period, a po… 展开

    Side effects

    In most women, various physical changes are brought about by fluctuations in hormone levels during the menstrual cycle. This includes muscle contractions of the uterus (menstrual cramping) that can precede or acco… 展开

    Menstrual disorders

    Infrequent or irregular ovulation is called oligoovulation. The absence of ovulation is called anovulation. Normal menstrual flow can occur without ovulation preceding it: an anovulatory cycle. In some cycles, follicular development ma… 展开

    Menstrual hygiene management

    Menstrual products (also called "feminine hygiene" products) are made to absorb or catch menstrual blood. A number of different products are available – some are disposable, some are reusable. Where women can affor… 展开

    Menstrual suppression

    Menstruation can be delayed by the use of progesterone or progestins. For this purpose, oral administration of progesterone or progestin during cycle day 20 has been found to effectively delay menstruation for … 展开

    Society and culture

    The word menstruation is etymologically related to moon. The terms menstruation and menses are derived from the Latin mensis 'month', which in turn relates to the ancient Greek mene 'moon' and to the roots of the English w… 展开

    Other mammals

    Most female mammals have an estrous cycle, but not all have a menstrual cycle that results in menstruation. Menstruation in mammals occurs in some close evolutionary relatives such as chimpanzees. 展开

     
  1. Menstrual cycle - Wikipedia

  2. 月經 - 维基百科,自由的百科全书

    月經 (英語: menstruation, period, monthly[1],香港地區又稱 月事,古代叫做 癸水[2] 、 天癸[3],俗稱 姨媽到[4][5] 、 大姨妈[6] 等),是指女性血液或 黏膜 定期從 子宮內膜 經 陰道 排出體外的現象 [7][8]。. 高達80%女性曾表示在月經 …

  3. 月经周期 - 维基百科,自由的百科全书 - zh.wikipedia.org

  4. Culture and menstruation - Wikipedia

    The terms menstruation and menses are derived from the Latin: mensis, lit. 'month', which in turn is cognate with the Ancient Greek: μήνη, romanized: mēnē, lit. 'lunar month', and the roots of the English words month and moon. …

  5. Menstruation - Simple English Wikipedia, the free encyclopedia

  6. Menstruation — Wikipédia

    La menstruation, couramment appelée les règles, est l'écoulement périodique et temporaire par le vagin d'un mélange composé de sang, de sécrétions vaginales, et de cellules de la paroi utérine. Ce phénomène est retrouvé chez l'être …

  7. menstrual cycle - Encyclopedia Britannica

    2024年10月24日 · Menstrual cycle, recurring fluctuations in hormone levels that produce physical changes in the uterus and ovaries to prepare the female body for pregnancy. In adult women, the menstrual cycle lasts anywhere from 21 to …

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  8. Menstrual cycle - Simple English Wikipedia, the free encyclopedia

  9. Menstruation and Menstrual Problems - NICHD

    2016年12月2日 · Menstruation (pronounced men-stroo-EY-shuhn) is normal discharge of blood and tissue from the uterine lining through the vagina (see diagram) that occurs as part of a woman's monthly menstrual cycle.

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