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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
Explain the menstrual phase in a human female. State the levels of ovarian and pituitary hormones during this phase.
Explain the role of pituitary and the ovarian hormones in menstrual cycle in human females
Draw a graafian follicle and label antrum and secondary oocyte.
Describe the phases of the menstrual cycle and their hormonal control.
Explain the importance of cleanliness during the time of menstrual cycle in girls.
Match the Columns.
| Column I | Column II | ||
| i. | Proliferative phase | a. | Breakdown of the endometrial lining |
| ii. | Secretory phase | b. | Follicular phase |
| iii. | Menstruation | c. | Luteal phase |
Which one of the following statements is incorrect about menstruation?
When does the corpus luteum degenerate?
The level of progesterone is high at which phase in the menstrual cycle?
Write a short note on Proliferative Phase.
