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Describe the features of IUDs and select the correct statements.
1. Increase sperm phagocytosis.
2. Releases copper ions, which reduce sperm motility and fertility.
3. Make the uterus unfit for implantation
4. Make the cervix unfriendly to sperms
5. Avoid allowing semen to enter the female reproductive system.
(i), (ii), (iii), (iv), and (v)
(i), (ii), (iii), and (iv)
(i) and (ii)
(ii), (iii), and (iv)
Answers (1)
Option 2 correctly states that IUDs release copper ions, which contribute to the contraceptive effect by reducing sperm motility and fertility. When an IUD is inserted into the uterus, it continuously releases small amounts of copper. These copper ions have a detrimental effect on sperm cells. Copper ions interfere with the normal functioning of sperm, leading to reduced motility, which is essential for their ability to reach and fertilize an egg. Additionally, copper ions also affect the fertilizing capacity of sperm, making it less likely for them to successfully fertilize an egg. By releasing copper ions, IUDs create an environment that is hostile to sperm and significantly reduces their chances of successfully fertilizing an egg. This mechanism of action contributes to the effectiveness of IUDs as a long-term contraceptive method. Hence, the correct answer is option 2.
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