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प्रश्न
Read the following passage and answer the question that follows:
Rahini and her parents were watching a television programme. An advertisement flashed on the screen which was promoting the use of sanitary napkins. Rahini’s parents suddenly changed the channel, but she objected to her parents and explained the need and importance of such an advertisement.
What is first menstruation called? When does it occur?
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उत्तर
The first menstruation is called Menarche. In human females, the menstrual cycle starts at the age of 11 – 13 years which marks the onset of puberty.
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संबंधित प्रश्न
Which hormones regulate menstrual cycle?
Identify True/False statement. Correct false statement to make it true.
Menstrual cycle ceases during pregnancy.
How can the scientific understanding of the menstrual cycle of human females help as a contraceptive measure?
Observe the figure and answer the questions given below.
a) What does the above figure indicate?
b) Which human organs are involved in this process?
c) Name the hormones responsible for this process.
d) After how many days these repetitive changes take place?
e) ‚A woman should stay away from others, as her body is impure during this process.‛ What is your opinion about this statement? Elaborate it.
In humans, the menstrual cycle is generally of ______.
All occur during follicular phase of menstrual cycle, EXCEPT
The endometrium in the female is the lining of ______.
The menstrual cycle begins with ______
Why are menstrual cycles absent during pregnancy?
The onset of menstruation in a human female is called ______.
