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Guilherme Mazui

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What is the Difference Between Ovulation and Menstruation?

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Ovulation and menstruation are two distinct aspects of a woman's menstrual cycle. Here are the main differences between the two:

Ovulation:

  • Occurs when a mature egg is released from the ovary.
  • The egg is available for fertilization for 12 to 24 hours after ovulation.
  • An increase in body temperature may be observed during ovulation.
  • Ovulation typically occurs around the 14th day of a 28-day menstrual cycle.

Menstruation:

  • Refers to the monthly shedding of the uterine lining (endometrium).
  • Lasts for 28 days on average, with the first day being the start of menstruation.
  • The menstrual blood is a mix of tissue and blood from inside the uterus.
  • Menstruation signals that pregnancy has not taken place during the cycle.

During ovulation, a luteinizing hormone (LH) surge occurs, which is linked to ovarian hormone production and egg maturation. Within 24 to 36 hours of an LH surge, a mature egg will be released and available for fertilization. If the egg is not fertilized, the lining of the uterus, which has thickened to prepare for fertilization, will be shed through menstruation. Menstruation typically lasts between 2 to 7 days, with the entire cycle happening every 20 to 40 days and an average cycle lasting 28 days.

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  • What is the Difference Between Ovulation and Menstruation?
  • Comparative Table: Ovulation vs Menstruation

    • Comparative Table: Ovulation vs Menstruation

    Ovulation and menstruation are two distinct processes within a woman's menstrual cycle. Here is a table highlighting the differences between them:

    Aspect Ovulation Menstruation
    Definition Ovulation is the release of a mature egg from the ovary. Menstruation is the monthly shedding of the uterine lining.
    Timing Occurs during a particular day of the menstrual cycle, typically the 14th day. Lasts for 28 days ideally, with menstruation occurring on the 1st day of the cycle.
    Purpose The egg is released to be fertilized. The bleeding occurs after ovulation if pregnancy does not occur.
    Fertility This is the only time during the menstrual cycle when a woman can conceive. A woman is not fertile during menstruation.
    Hormonal Changes Estrogen and progesterone levels play a role in ovulation. The menstrual cycle is guided by hormonal signals sent by the brain.
    Symptoms Some women experience symptoms of ovulation, such as a slight rise in basal body temperature. Pre-menstrual symptoms (PMS) may occur, including breast tenderness, bloating, lethargy, depression, and irritability.
    Bleeding No bleeding occurs during ovulation. Menstrual blood is a mix of tissue and blood from inside the uterus.
    Temperature of the Body Body temperature increases during ovulation. Body temperature decreases before menstruation.
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    Guilherme Mazui

    Guilherme Mazui is graduated in journalism from the Federal University of Minas Gerais (UFMG) and a master's degree in Communication from the University of São Paulo (USP). In addition, he has experience in advertising writing and has worked as a content editor in several companies.