CBSE Class 10 Answered

 IUCD or Intrauterine contraceptive device is a birth control method. All intrauterine contraceptive devices produce an inflammatory response in the fluid of the genital tract that largely prevents fertilisation. Copper, increases this inflammatory response and it is toxic to sperm (spermicidal) and the early embryo. The amount of copper entering the body from copper containing IUCDs is believed to be of no significance as there is very little increase in blood levels of copper. Most of the copper is lost through the fluid in the uterus which passes into the vagina.

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