Question

$Cu$ ions released from copper-releasing intra uterine devices (IUDs)

• A. make uterus unsuitable for implantation
• B. increase phagocytosis of sperms
• C. suppress sperm motility
• D. prevent ovulation.

Answer 1

Answer: (C)

Intra uterine devices (IUDs) are inserted by doctors or expert nurses in the uterus through vagina. These intra uterine devices are available as the non- medicated IUDs (e.g., Lippes loop), copper releasing IUDs (CuT, Cu7, Multiload 375) and the hormone releasing IUDs (Progestasert, LNG-20). IUDs increase phagocytosis of sperms within the uterus and the Cu ions released suppress sperm motility and the fertilising capacity of sperms. The hormone releasing IUDs, in addition, make the uterus unsuitably for implantation and the cervix hostile to the sperms.