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Name any two copper releasing Intra Devi...

Name any two copper releasing Intra Devices (IUDs).List two reasons that make them effective contraceptives .

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The Copper releasing IUDs are Multiload 375 ,CuT, CU 7 etc. These devices slowly allow the diffusion of copper at the rate of 50 mg/day. IUDs increase phagocytosis of sperms in the uterus and the copper ions released suppress the sperm motility and their ability to fertilize the ovum.
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