Question

IUDS which are used by females.

• A. are implanted under the skin and they release progestogen and estrogen
• B. act as spermicidal jellies
• C. release copper ions in the uterus that increase phagocytosis of sperm
• D. block the entry of sperms into vagina

Answer 1

The correct option is C release copper ions in the uterus that increase phagocytosis of sperm

An intrauterine device (IUD), also known as intrauterine contraceptive device (IUCD or ICD) or coil, is a small, often T-shaped birth control device that is inserted into a woman's uterus to prevent pregnancy The types of intrauterine devices available are : Nonhormonal: Copper-containing IUD (ParaGard and others), Hormonal: Progestogen-releasing IUD (Mirena and others). Most copper IUDs have a plastic T-shaped frame that is wound around with pure electrolytic copper wire and/or has copper collars (sleeves). The arms of the frame hold the IUD in place near the top of the uterus. They work by damaging sperm and disrupting their motility so that they are not able to join an egg. Specifically, copper acts as a spermicide within the uterus by increasing levels of copper ions, prostaglandins, and white blood cells within the uterine and tubal fluids, The increased copper ions in the cervical mucus inhibit the sperm's motility and viability, preventing sperm from traveling through the cervical mucus, or destroying it as it passes through.

So, the correct option is 'release copper ions in the uterus that increase phagocytosis of sperm'