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प्रश्न
Why menstrual cycle does not take place before puberty and during pregnancy?
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उत्तर
The reproducing period of a women’s life starts and becomes functional and an increase in sex hormone production starts only in puberty. So the menstrual cycle does not take place before puberty. The release of a mature egg, maintains the lining of the uterus, during pregnancy. During pregnancy, the placenta produces progesterone. This maintains the lining of the uterus during pregnancy and means that menstruation does not happen.
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संबंधित प्रश्न
Describe the role of pituitary and ovarian hormones during the menstrual cycle in a human female.
Uterus, Parturition, Fertilisation, Gestation, Implantation.
Mention one significant difference between Hormones of ovulatory phase and hormones of luteal phase
How can the scientific understanding of the menstrual cycle of human females help as a contraceptive measure?
Choose the correct answer from the four options given below :
On which day of the menstrual cycle does ovulation take place ?
‘A proper understanding of the menstrual cycle can help immensely in family planning.’ Do you agree with the statement? Provide reasons for your answer.
The life of corpus luteum is generally about ______ days in the absence of pregnancy
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 |
When does ovulatory phase occur?
The Corpus luteum grows during menstruation.
