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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 ...
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 ...
Females in need of male time and energy should synchronise their cycles, preventing any single male from monopolising access. In order to work out why menstrual synchrony might have evolved, it is necessary to investigate why individuals who synchronized their cycles might have had increased survival and reproduction in the evolutionary past.
Because periods can reveal so much about a woman’s health, says Vash-Margita, all doctors — not just gynecologists — should pay attention to women’s periods. Vash-Margita says that regular ...
Menopause, also known as the climacteric, is the time when menstrual periods permanently stop, marking the end of the reproductive stage for the female human. [1] [6] [7] It typically occurs between the ages of 45 and 55, although the exact timing can vary. [8]
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Females of most mammal species advertise fertility to males with visual behavioral cues, pheromones, or both. [9] This period of advertised fertility is known as oestrus, "estrus" or heat. [9] In species that experience estrus, females are generally only receptive to copulation while they are in heat [9] (dolphins are an exception). [10]
Do women still get their periods while in a coma? The question took social media by storm after it was posted by user @CloudxRaven last Monday (December 2), garnering almost 24 million views with ...