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Question
Males in whom testes fail to descend to the scrotum are generally infertile. Why?
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Solution
If the testes fail to descend to the scrotum, gametogenesis could be inhibited, the process of spermatogenesis require a marginally lesser ambient temperature than that in the abdominal cavity.
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RELATED QUESTIONS
A large number of married couples the world over are childless. It is shocking to know that in India the female partner is often blamed for the couple being childless.
- Why in your opinion the female partner is often blamed for such situations in India? Mention any two values that you as a biology student can promote to check this social evil.
- State any two reasons responsible for the cause of infertility.
- Suggest a technique that can help the couple to have a child where the problem is with male partner.
State True/False with explanation.
Infertility is defined as the inability to produce a viable offspring and is always due to abnormalities/defects in the female partner.
Expand the following:
ZIFT
Explain one application of the following:
ZIFT
Multiple choice question.
Test tube baby technique is called _______.
Fill in the blank:
Gonorrhoea is caused by _______ bacteria.
The method of directly injecting a sperm into ovum in assisted by reproductive technology is called ______.
In ______ the egg is first fertilized outside the body and then it is inserted into the oviduct.
In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation?
Artificial insemination means ______.
Which method can be used for women that cannot produce ovum but can provide suitable environment?
In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube?
Which of the following is a non-medicated intrauterine device (IUD)?
ZIFT stands for ______
Trace the events from copulation to zygote formation in a human female.
In which of the following techniques, the embryos are transferred to exist those females who cannot conceive?
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 |
The ______ is also called the womb.
Name any two Cu-ions releasing IUDs.
