Extra Credit +2 pts (instructor graded) Using the chart belo…
Extra Credit +2 pts (instructor graded) Using the chart below, determine which birth control method can protect against STDs? Method How does it work? * OTC# or prescribed? advantages/disadvantages birth control pill prevents ovulation 0.1 presc. convenient, highly reliable/ serious side effects for some users; not recommended for smokers, may be costly vasectomy prevents sperm from leaving the vas deferens 0.1 doctor-performed procedure usually irreversible simple out-patient procedure tubal ligation prevents sperm and egg from uniting in oviduct 0.2 doctor-performed procedure usually irreversible major surgical procedure progestin implant prevents ovulation, alters cervical mucus 0.5 presc. highly effective/ fairly new method calendar rhythm calculates fertile period from menstrual history 10-20 no cost; fairly useful for planning a pregnancy / highly unreliable; requires abstinence for at least half the cycle ovulation method timing of intercourse by observation of cervical mucus 2 no cost, very reliable; very useful for planning a pregnancy/ requires abstinence for at least half the cycle withdrawal prevents sperm entry into vagina 4 frustration of partners; extremely hard to use consistently condom prevents sperm entry into vagina 2 OTC prevents STDs; very reliable; readily available/ uncomfortable for some people diaphragm (and spermicide) prevents sperm entry into uterus 3-6 presc. reliable/ uncomfortable for some people cervical cap (and spermicide) prevents sperm entry into uterus 6 presc. reliable/ uncomfortable for some people sponge (and spermicide) prevents sperm entry into uterus 6-9 OTC reliable/ uncomfortable for some people spermicide (cream, jelly or foam) kills sperm 3 OTC very reliable/ uncomfortable for some people
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