Cu ions released from the copper-releasing intrauterine devices (IUDs)

suppress sperm motility

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increase phagocytosis of sperms

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prevent ovulation

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make uterus unsuitable for implantation

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Solution

The correct option is A suppress sperm motility
Copper releasing IUDs are the intra-uterine devices which release copper ions into the uterus.

Copper specifically suppresses the motility of the sperms so that they cannot swim and reach the fallopian tube for fertilisation.

Copper ions also reduce the fertilising capacity of the sperms.

Examples include CuT, Cu7, Multiload 375.

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C u^{+ 2}

Copper ions released from copper-releasing Intrauterine Devices (IUDs) :

Copper ions which are released from copper releasing intrauterine devices (IUDs)

Cu2+ ions released from copper-releasing Intrauterine device (IUDs) -

C u^{+ +}

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