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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. Development of the human body - Wikipedia

    en.wikipedia.org/wiki/Development_of_the_human_body

    The germinal stage refers to the time from fertilization through the development of the early embryo until implantation is completed in the uterus. The germinal stage takes around 10 days. [2] During this stage, the zygote begins to divide, in a process called cleavage. A blastocyst is then formed and implanted in the uterus.

  5. Luteal phase - Wikipedia

    en.wikipedia.org/wiki/Luteal_phase

    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). [1]

  6. Endometrium - Wikipedia

    en.wikipedia.org/wiki/Endometrium

    During the menstrual cycle or estrous cycle, the endometrium grows to a thick, blood vessel-rich, glandular tissue layer. This represents an optimal environment for the implantation of a blastocyst upon its arrival in the uterus. The endometrium is central, echogenic (detectable using ultrasound scanners), and has an average thickness of 6.7 mm.

  7. What is a tilted uterus and why does it happen? - AOL

    www.aol.com/lifestyle/tilted-uterus-why-does...

    "Uterine-lining cells growing outside the uterus can attach to other organs and tilt the uterus," Wider says. Uterine fibroids . These are are tumors that grow on the uterus that are usually not ...

  8. Estrous cycle - Wikipedia

    en.wikipedia.org/wiki/Estrous_cycle

    One or several follicles of the ovary start to grow. Their number is species-specific. Typically, this phase can last as little as one day or as long as three weeks, depending on the species. Under the influence of estrogen, the lining of the uterus (endometrium) starts to develop. Some animals may experience vaginal secretions that could be ...

  9. What is uterus didelphys? Why some women have two ... - AOL

    www.aol.com/lifestyle/why-people-born-2-uteruses...

    In 2019, a woman living in Bangladesh with a double uterus gave birth to three babies — first, a baby from one uterus, and then, 26 days later, twins from her second uterus.