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Write the full form of IUDs. Give variou...

Write the full form of IUDs. Give various examples under this category-How do they work?

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IUDS stand for .Intra-uterine devices.. Examples
(i) Non-medicated IUDs-Lippes loop
(ii) Copper releasing IUDs - Cu T, Cu 7, Multiload 375
(iii) Hormone releasing- Progestasert, LNG-20
These IUDs increase phagocytosis of sperms within the uterus and the Cu ions released by some suppress sperm motility and the fertilizing capacity of sperms.
Similarly, hormone releasing IUDS prevent implantation and make the cervix hostile to the sperms. Thus, these IUDs prevent the fertilization of ovum by the sperm. It is most effective means of contraception to control birth in India.
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