Advertisements
Advertisements
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?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Describe the changes that occur in ovaries and uterus in human female during the reproductive cycle.
Give Reasons
The chances of pregnancy to occur are most favourable on or about the 14th day of the menstrual cycle. Explain.
Complete the following sentences with appropriate word:
The human gestation period is about ____________.
Why menstrual cycle does not take place before puberty and during pregnancy?
The menstrual cycle ceases during pregnancy.
Which one of the following menstrual irregularities is correctly matched?
____________ is transformed to corpus luteum during luteal phase of the menstrual cycle.
Calculate the expected date of ovulation, if in a normal menstruating woman, gets her menses on 5th April.
Immediately after ovulation, the mammalian egg is covered by a membrane known as ______.
Which of the following statements are correct regarding female reproductive cycle?
- In non-primate mammals cyclical changes during reproduction are called oestrus cycle.
- First menstrual cycle begins at puberty and is called menopause.
- Lack of menstruation may be indicative of pregnancy.
- Cyclic menstruation extends between menarche and menopause.
Choose the most appropriate answer from the options given below:
