In Adolescence there are also  internal changes that are not visible from the outside.

One such change is the maturation of various parts involved in reproduction .
Example Girls experience periods (Menstrual Cycle) during which there is blood discharge (mensuration)

What is the "Menstrual Cycle"?

It is an important internal change that begins in adolescent girls.

It is more commonly known as 'the period' .

6.2 Changes that Indicate Reprod - Adolescence: A Stage o - [Teachoo] - Concepts

Key facts about the menstrual cycle

  • Cycle length — generally every 28–30 days .
     many healthy girls may have cycles ranging from 21–35 days
  • Significance — one of the signs of good reproductive health .
  • Onset — begins at puberty.
  • End — usually by the age of 45–55 years , the cycle stops naturally, marking the end of reproductive capability in a woman's life.
Definition

The menstrual cycle is a natural process in adolescent girls that recurs every 28–30 days (or 21–35 days in some healthy girls). It is one of the signs of good reproductive health.

What is "Menstruation"?

It is the phase of the menstrual cycle when blood is discharged from the body.

It is sometimes accompanied by mild pain or discomfort — both are natural.

part 2 - 6.2 Changes that Indicate Reproductive Capability - Concepts - Chapter 6 Class 7 - Adolescence: A Stage of Growth and Change (Curiosi - Class 7

Key features of menstruation

  • Duration 3 to 7 days each cycle.
  • Pain or discomfort — some girls may feel cramps in the lower abdomen during these days. This is normal.
  • Onset — It begins at puberty.
  • End — It is generally by the age of 45–55 years.
  • Significance — It is a natural process and a sign of a healthy reproductive system.
Definition

Menstruation is the phase of the menstrual cycle when blood discharge occurs from the body. It may last for three to seven days .

🌍 Breaking Myths About Menstruation

There are many wrong beliefs about menstruation that often lead to unnecessary fear, shame, or even guilt

Example
Physical isolation of menstruating girls  

Menstruation is a natural process, and such myths have no scientific basis.
We should encourage a scientific outlook towards menstruation, and we can help society appreciate the need to promote good reproductive health of women

🤔 Quick Check — Test Yourself (6.2)
  1. How often does the menstrual cycle generally recur?
    View Answer Hide Answer
    Every 28–30 days (it can range from 21–35 days in healthy girls).
  2. What is the duration of menstruation?
    View Answer Hide Answer
    Three to seven days .
  3. At what age does menstruation usually stop naturally?
    View Answer Hide Answer
    By the age of 45–55 years — marking the end of reproductive capability.
  4. Are myths and taboos about menstruation scientifically valid?
    View Answer Hide Answer
    No. Menstruation is a natural process; such myths have no scientific basis.
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