| A | B |
|---|
| sperm | very small and mobile; has a head and a tail |
| egg | larger and nutrient filled; if fertilized becomes an embryo |
| y chromosome | males carry this chromosome |
| x chromosome | females carry two of these |
| male | produces sperm in testes |
| female | egg matures in ovary and travels down fallopian tube |
| menstrual cycle | begins in puberty; occurs irregularly at first |
| gestation | time from fertilization to birth |
| amniotic fluid or sac | fluid which protects the fetus |
| placenta | provides oxygen and nutrients to the embryo/fetus |
| umbilical cord | connects the placenta to the unborn child |
| 1/3 of american females | those who become pregnant in their teens |
| 1/3 of teen females | the amount of teen mothers who graduate from high school |
| barrier methods | spermicide, diaphragm, sponge, condom |
| hormonal methods | pills, patch, vaginal ring, injections |
| surgical methods | vasectomy, tubal ligation |
| bacterial STDs | gonorrhea, syphillis, BV, chlamydia, PID |
| Viral STDs | HIV/Aids, Herpes I and II, Hepatitis B |
| Parasitic STD's | pubic lice, scabies, trichomoniasis |
| can be spread by skin to skin contact | herpes, syphillis, pubic lice, scabies, HPV |
