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intrauterine device(IUD), variously shaped birth controlbirth control,
practice of contraception for the purpose of limiting reproduction. Methods of Birth Control
Male birth control methods include withdrawal of the male before ejaculation (the oldest contraceptive technique) and use of the condom, a rubber sheath
..... Click the link for more information. device, usually of plastic, which is inserted into the uterusuterus,
in most female mammals, hollow muscular organ in which the fetus develops and from which it is delivered at the end of pregnancy. The human uterus is pear-shaped and about 3 in. (7.
..... Click the link for more information. by a physician. The IUD may contain copper or levonorgestrel, a progestin (a hormone with progesteronelike effects; see progesteroneprogesterone
, female sex hormone that induces secretory changes in the lining of the uterus essential for successful implantation of a fertilized egg. A steroid, progesterone is secreted chiefly by the corpus luteum, a group of cells formed in the ovary after the follicle
..... Click the link for more information. ). Apparently the IUD creates a hostile environment for the fertilized egg.