First menstrual cycle starts at

First menstrual cycle is

First menstrual cycle is

First menstrual cycle is

First menstrual cycle starts is …........

The first menstrual cycle begins at adolescence and is termed as ---

The menstrual cycle prepares the uterus for a fertilised egg. How long is an average menstrual cycle from start to finish ?

The menstrual cycle prepares the uterus for a fertilised egg. How long is an average menstrual cycle from start to finish?

What is menstrual cycle?

Define menstrual cycle.