CBSE · Class 12 · Biology · Reproductive HealthHow do copper-releasing IUDs act as effective contraceptives in females?
Step-by-Step Solution
Copper-releasing Intrauterine Devices, such as CuT, Cu7, and Multiload 375, are placed inside the uterine cavity. They release copper ions ($Cu^{2+}$) continuously into the uterus. These released copper ions suppress the motility and fertilizing capacity of spermatozoa. Additionally, IUDs increase phagocytosis of sperms within the uterus, thereby preventing successful fertilization.
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