Question

Name any two copper-releasing Intrauterine Devices (IUDs). List two reasons that make them effective contraceptives.

Answer 1

Hint: Contraceptives are the various devices or tools which are used to prevent birth and sudden contraception in an individual.

Complete answer:
Intrauterine device (IUD) with copper is known as the intrauterine coil, is a type of intrauterine device which contains copper. The two copper releasing intrauterine devices are Cu-T and multiload 375.
To prevent birth control and emergency contraception, the intrauterine devices should be used within five days if the sex performed is unprotected. It is one of the most effective forms of birth control with a year failure rate of around 0.7%. This device is placed in the uterus and lasts up to twelve years. When it is removed, fertility quickly returns.
To prevent fertilization copper IUDs are used as its main function is to prevent the sperm from reaching the eggs. Copper acts as a spermicide within the uterus. It increases the phagocytosis of sperms as the copper ions released will suppress sperm motility as well as their fertilizing capacity, preventing contraception. This copper in the uterus will also release prostaglandins and white blood cells within the uterine and tubal fluids.
The first intrauterine device was described in a German publication in 1909. Many different models of the copper IUDs were developed by Tatum. He created TCu220 C, which had copper as opposed to the copper filament. The second-generation copper-T IUDs were also introduced in the 1970s. The model which is most recommended today is TCu380A, which was the last model developed by Tatum.

Note: The contraceptives are the devices or drugs serving to prevent pregnancy. The method of birth control is of two types: Hormonal birth control (method works by preventing ovulation to make a woman temporarily infertile) and Barrier methods (diaphragm, condoms, etc). In 1952, in Mexico Carl Djerassi was the first to discover the contraceptive pill in humans.