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The Tanner scale (also known as the Tanner stages or sexual maturity rating (SMR)) is a scale of physical development as pre-pubescent children transition into adolescence, and then adulthood. The scale defines physical measurements of development based on external primary and secondary sex characteristics , such as the size of the breasts ...
The average age of a girl's first period is 12 to 13 (12.5 years in the United States, [6] 12.72 in Canada, [7] 12.9 in the UK [8]) but, in postmenarchal girls, about 80% of the cycles are anovulatory in the first year after menarche, which declines to 50% in the third year, and to 10% by the sixth. [9]
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 ...
A chart depicting the average growth of babies from birth to 36 months. Items portrayed in this file depicts. copyright status. public domain. applies to jurisdiction ...
How to Make My 20-Minute Tomato Orzo Soup. To make four to five servings, you’ll need: 2 tablespoons extra-virgin olive oil. 3 cups fresh or frozen mirepoix (about 1 pound)
Infant (baby) Toddler; Play age; Elementary school age, may coincide with preadolescence (preteen) Approximate outline of development periods in child development. The Tanner stages can be used to approximately judge a child's age based on physical development.
Virginia-bred singer Tommy Richman makes his Billboard Hot 100 debut with “Million Dollar Baby” after the single experienced staggering growth in a rollout that started April 13 when Richman ...