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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]
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 ...
The human female reproductive system is made up of the internal and external sex organs that function in the reproduction of new offspring. The reproductive system is immature at birth and develops at puberty to be able to release matured ova from the ovaries , facilitate their fertilization , and create a protective environment for the ...
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.
Granulosa cell apoptosis is promoted by tumor necrosis factor-alpha (TNFα), although the mechanism of how it occurs is unclear. [16] Fas antigen, a cell surface receptor protein, that is expressed on granulosa cells, mediates signals that induce apoptosis by binding Fas ligand and therefore plays an important role in follicular atresia. [17]
It's not unusual for fitness equipment, trends, and workouts to mimic everyday movements or activities. The stair climber machine at many gyms, for instance, is not much different than the flight ...
The endometrium is the inner epithelial layer, along with its mucous membrane, of the mammalian uterus.It has a basal layer and a functional layer: the basal layer contains stem cells which regenerate the functional layer. [1]