Mark the correct statement about IUDs .

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IUDs increase phagocytosis of sperms within the uterus.

Copper-releasing IUDs increase the motility and fertilising capacity of sperms

IUDs are highly effective bur their reversibility is poor

Non-medicated IUDs inhibit ovulation and implantation.

answer is B.

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Detailed Solution

IUDs increase phagocytosis of sperms within the uterus.

IUDs are reversible. When not required, an IUD can be removed by grasping the strings of the IUD that hang out form the IUD into the vagina through the cervix.

Ovulation may be inhibited by hormone-releasing IUDs but non-medicated IUDs.

Cu ions released from IUDs suppress sperm motility and the fertilising capacity of sperms.

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