Memory Game Birth ControlOnline version Match the type to the definition. by Ashley Kreider A coil is inserted into the fallopian tube to prevent the eggs from traveling to the uterus. Abstinence is the only 100% effective method for preventing pregnancy and STIs. Pill Condom The vaginal ring (inserted once a month) releases hormones that It helps to keep eggs in the ovaries. This hormonal birth control is taking by the mouth and helps to control ovulation. Vasectomy The hormones in the implant prevent pregnancy by interrupting ovulation. The vas deferens is cut in order to block the flow of sperm. A covering that is placed on the penis/or vagina that prevents sperm from traveling. This hormonal form of birth control is inserted in the uterus. It makes the uterus unable to sustain life During tubal ligation, the tubes are cut, tied or blocked to permanently prevent pregnancy.