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 uterus unsuitable for implantation

D They inhibit ovulation

The answer is A.

Solution

$Cu^{2+}$ reduces sperm motility and fertilising capacity.

$Cu^{2+}$ ions interfere with sperm movement, hence they suppress sperm motility and the fertilising capacity of sperms.

Concept copper-iud-sperm-motility

65 questions from this chapter have appeared across 20 exam years.