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प्रश्न
Explain any two ways by which IUDs devices act as contraceptives.
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उत्तर
- Copper-releasing IUDs produce copper ions, which reduce sperm motility and fertility.
- Copper-releasing IUDs make it tougher for a fertilised egg to implant in the uterus.
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संबंधित प्रश्न
Expand the following:
ZIFT
Give four causes of infertility in males.
Fill in the blank:
The primary sex organ in human male is _______.
In ______ the egg is first fertilized outside the body and then it is inserted into the oviduct.
Assisted reproductive technology, IVF involves transfer of ______.
A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is ______.
ZIFT is transfer of ______.
Males in whom testes fail to descend to the scrotum are generally infertile. Why?
Placed below are case studies of some couples who were not able to have kids. These couples are not ready for adoption or taking gametes from donors. After thoroughly examining the cases, which Assisted Reproductive Technology will you suggest to these couples as a medical expert? Explain briefly with justification of each case.
| Couple | Test reports of Female partner |
Test reports of male partner |
| Couple 1 | Normal reports | Normal sperms in testes, Missing connection in epididymis and Vas deferens. |
| Couple 2 | Blockage in the fallopian tube | Normal reports |
| Couple 3 | Normal reports | Poor semen parameters in terms of count, motility and morphology. |
| Couple 4 | low ovarian reserve | Normal reports |
| Couple 5 | Sterilization in male | Morphologically abnormal sperms |
Which one of the following choices reflects the correct number of chromosomes in the zygote and in the second polar body of Drosophila melanogaster?
| Zygote | Meiocytes | |
| I | 08 | 08 |
| II | 04 | 08 |
| III | 08 | 04 |
| IV | 04 | 04 |
