Question

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

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

Answer 1

Answer: (B)

They suppress sperm motility and fertilizing capacity of sperms.

IUD's release copper ions which suppress the activity or the motility of sperm inside the female reproductive tract. As the sperm's motility get suppressed, the fertilization does not occurs. Thus, the correct answer is option B.