HSC 106QR Lecture Notes - Lecture 1: Corpus Luteum, Condom, Progestin
Conception: fusion of an ovum and sperm that creates a fertilized egg or zygote. Contraception- blocking conception through the use of a device, substance, or method. Oral contraceptives: the pill: mimics the hormonal activity of the corpus luteum, combination pill. 1 week of placebo pills-no hormones: effectiveness: when taken as directed, the failure rate is 0. 3 percent. Contraceptive skin patch: releases estrogen and progestin slowly into the bloodstream, prevents pregnancy the same way as combination ocs, worn for one week, replaced on the same day for three consecutive weeks. Fourth week no patch to allow for menstrual cycle. Vaginal contraceptive ring: the nuvaring, molded with progestin and estrogen, 2-inch ring slowly releases the hormones, during fourth week, remove the ring; use a new ring after the fourth week. Contraceptive implants: single implant/ upper arm, effective for three years, inhibits ovulation and affects the development of uterine lining. Male condoms: thin latex, or polyurethane, sheaths, protection against stds.