Menarche Summary

Everything you need to understand or teach Menarche.

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1 Encyclopedia Article

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Encyclopedia Articles (1)

Menarche

187 words, approx. 1 pages

Menarche The first menstrual period, which occurs at an average age of 12.8 years for girls in the United States The age at which girls begin to menstruate varies widely and may be influenced by a num... Read more

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