What is menarche?

What is menarche?

• A. Onset of puberty at age 12
• B. Start of menopause
• C. Day of first menstrual period
• D. First ejaculation

Answer: (C)

Menarche is the first menstrual period, marking the start of a girl’s reproductive years. It reflects the maturation of the hypothalamic–pituitary–ovarian axis and the beginning of cyclic uterine bleeding, even though the early cycles may be irregular or anovulatory. It typically occurs during early adolescence after initial pubertal changes like breast development, but the exact timing varies. It’s not menopause, which is the end of menstrual cycles; it’s not the day of ejaculation, which is a male event; and it’s not the broad onset of puberty itself—the broader pubertal changes occur before menarche, which is specifically the first period.

Menarche is the first menstrual period, marking the start of a girl’s reproductive years. It reflects the maturation of the hypothalamic–pituitary–ovarian axis and the beginning of cyclic uterine bleeding, even though the early cycles may be irregular or anovulatory. It typically occurs during early adolescence after initial pubertal changes like breast development, but the exact timing varies.

It’s not menopause, which is the end of menstrual cycles; it’s not the day of ejaculation, which is a male event; and it’s not the broad onset of puberty itself—the broader pubertal changes occur before menarche, which is specifically the first period.