Question

What is the scientific term for the beginning and ending of menstrual cycle?

Answer 1

Hi.

Here is your answer--------

The scientific term for the beginning of Menstrual cycle in a pubertal girl is Menarche.
        The scientific term for the ending of Menustral cycle in a woman (mostly after the age of 45 years is  Menopause.

Hope it will help u.

Have a nice day.

Answer 2

Starting is menarche & ending Is menopause