Health Sciences 2000A/B Chapter Notes - Chapter 8: Medical Abortion, Tubal Ligation, Combined Oral Contraceptive Pill

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2000A/B
• Professor: Kenneth Kirkwood

Document Summary

Conception refers to the fertilization of an ovum by a sperm. Contraception refers to methods of preventing conception. There are two present methods of preventing conception: reversible methods and permanent methods. Reversible: the birth control pill, condoms, abstinence, outercourse (oral-genital sex and mutual masturbation) etc. Outercourse is 100% effective as long as the male does not ejaculate near the vaginal opening, but there is still a risk for stis. Condoms prevent sperm migration towards the egg, is the only temporary birth control for men, and is the only barrier that prevents the spread of stis. The perfect use effectiveness rate (the percent of women who will become pregnant in one year if using the method of contraception properly) is 98% (meaning 2 out of every 100 women get pregnant using condoms alone. The typical use effectiveness rate (the percent of women who will become pregnant by using the contraceptive incorrectly) is 85%, as condoms are sometimes not used properly.