menarche
Estrogen is necessary for breast development and menstruation.
The term used to describe the onset of menstruation during puberty is menarche.Menarche is normally first menstruation, although sometimes women can bleed as a result of hormonal changes rather than following ovulation, but without knowing whether a girl has ovulated or not we assume first bleed is menstruation...menarche.
typically the period lifetime is 35 years so yes it can have a baring on early onset.
The terms which describes this is menarche. Its the onset of menstruation . The average age is 11-12 years.
The term menarche describes onset of menstruation. This is usually charachterisic of age 12 or 13.
Well, the menstruation starts at the age of 12-13 in girls. The term for onset of menstruation is menarche .
Onset of menstruation which happens during puberty is termed menarche.
The beginning of menstruation is called
The main change is that the testis become larger in size. In females there is onset of menstruation.
There is increase in libido. also onset of menstruation.
For males, there is increase in size of testis. For females there is onset of menstruation.