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  2. Menarche - Wikipedia

    en.wikipedia.org/wiki/Menarche

    Upon menarche and completion of the ritual, they have become a woman as defined by their culture. For young women in many cultures, the menarches are a marker that signifies a change in status. Post-menarche, the young woman enters a stage called maidenhood, the stage between menarche and marriage. [41]

  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. Woman - Wikipedia

    en.wikipedia.org/wiki/Woman

    Menarche, the onset of menstruation, occurs on average at age 12–13. Many cultures have rites of passage to symbolize a girl's coming of age , such as confirmation in some branches of Christianity , [ 24 ] bat mitzvah in Judaism , or a custom of a special celebration for a certain birthday (generally between 12 and 21), like the quinceañera ...

  5. 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 ...

  6. Amenorrhea - Wikipedia

    en.wikipedia.org/wiki/Amenorrhea

    Primary amenorrhea is defined as an absence of secondary sexual characteristics by age 13 with no menarche or normal secondary sexual characteristics but no menarche by 15 years of age. [3] It may be caused by developmental problems, such as the congenital absence of the uterus, failure of the ovary to receive or maintain egg cells , or delay ...

  7. Culture and menstruation - Wikipedia

    en.wikipedia.org/wiki/Culture_and_menstruation

    Menarche (the first menstrual cycle at puberty) is traditionally treated as a sign that the girl is probably ready for sex and marriage, as well as for adult duties in the household. Initiation rites on menarche include instruction on sex and marital relations as well as on menstrual management. This is conducted by older women.

  8. Dysmenorrhea - Wikipedia

    en.wikipedia.org/wiki/Dysmenorrhea

    Risk factors for primary dysmenorrhea include: early age at menarche, long or heavy menstrual periods, smoking, and a family history of dysmenorrhea. [12] Dysmenorrhea is a highly polygenic and heritable condition. [23] There is strong evidence of familial predisposition and genetic factors increasing susceptibility to dysmenorrhea.

  9. Child development - Wikipedia

    en.wikipedia.org/wiki/Child_development

    Adolescence is the stage of life that typically starts around the major onset of puberty, with markers such as menarche and spermarche, typically occurring at 12–14 years of age. [3] It has been defined as ages 10 to 24 years old by the World Happiness Report WHR. [1]