the first menstrual cycle beings at adolescence is called
a)retarche
b)menarche
c)both a and b
d)menopause
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Both a And b....... ...
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Menarche is the occurrence of a first menstrual period in the female adolescent. Menstruation is the monthly shedding of the functional layer of the uterine endometrial lining that occurs when ovulation is not followed by fertilization.
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