Question

The function of copper ions in copper releasing IUD's is

• A. They suppress sperm motility and fertilising capacity of sperms
• B. They inhibit gametogenesis
• C. They make the uterus unsuitable for implantation
• D. They inhibit ovulation

Answer 1

The correct option is A

They suppress sperm motility and fertilising capacity of sperms

The correct option is A.

Explanation of correct option:

1. In copper-releasing IUDs, the purpose of copper ions is to destroy the male reproductive cells.
2. In these IUDs, the copper ions act on the cervical mucus at the opening of the uterus.
3. The copper ions released within the female reproductive tract inhibit or prevent the movement or motility of sperms.
4. Due to the suppression of movement of the sperms, fertilization does not take place.

Explanations of incorrect options:

Option B:

1. The copper ions in copper-releasing IUDs inhibit the motility of sperms in the female reproductive tract.
2. The copper ions have nothing to do with the inhibition of gametogenesis, the process of division of haploid or diploid cells to produce new haploid cells.

Option C:

1. The copper ions in copper-releasing IUDs inhibit the motility of sperms in the female reproductive tract.
2. The copper ions do not make the uterus unsuitable for implantation.
3. Oral pills are used to inhibit ovulation.

Option D:

1. The copper ions in copper-releasing IUDs inhibit the motility of sperms in the female reproductive tract.
2. The copper ions have nothing to do with the inhibition of ovulation.
3. Oral pills are used to inhibit implantation.

Final Answer: The function of copper ions in copper-releasing IUDs is to suppress the sperm motility and fertilizing capacity of sperms.