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Question

Copper ions released from copper-releasing Intrauterine device (IUDs) -


A

Prevent ovulation

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B

Make uterus unsuitable for implantation

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C

Increase phagocytosis of sperms

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D

Suppress sperm motility

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Solution

The correct option is D

Suppress sperm motility


Copper IUDs primarily work by disrupting sperm motility and damaging sperm so that they are prevented from joining with an egg. Copper acts as a spermicide within the uterus, increasing levels of copper ions, prostaglandins, and white blood cells within the uterine and tubal fluids.


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