Question

Copper releasing intrauterine devices are very effective and popular contraceptive devices. Name any two copper releasing IUDs. Write two reasons that make them effective contraceptives.

Answer 1

Two reasons they are effective contraceptives:

1. The released copper ions are spermicidal; they suppress sperm motility and reduce sperm fertilizing capacity.
2. Copper IUDs increase phagocytosis of sperm within the uterus, so fewer sperm survive to reach and fertilize an egg.