Hormone-releasing IUDs (e.g., Progestasert, LNG-20) act by:
AMaking the uterus unsuitable for implantation and the cervix hostile to sperms
BReleasing copper ions that kill sperms
CInhibiting spermatogenesis
DPermanently sterilising the female
Answer & Solution
Correct answer: A. Making the uterus unsuitable for implantation and the cervix hostile to sperms
In addition to the general IUD effect of increased phagocytosis, hormone-releasing IUDs **make the uterus unsuitable for implantation and the cervix hostile to sperms** (by altering cervical mucus and the endometrium).
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