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Across 3. The most advanced stage of HIV 7. The single-celled organism that results from fertilization/conception 8. The inability to become pregnant or to cause a pregnancy 10. When an embryo or fetus dies before the 20th week of pregnancy 13. When an ovary releases an egg 15. One of two narrow tubes that carry an egg from the ovary to the uterus during ovulation 17. The fallopian tubes, ovaries, uterus, vagina, penis, and testes 18. The reproductive organ from which people menstruate and where a pregnancy develops 20. The time from the first day of one period to the first day of the next period 22. Not having sex with anyone 24. The moment when semen spurts out of the opening of the urethra 25. Chemicals that cause changes in our bodies and brains 26. Fluid containing sperm that’s ejaculated from the penis during orgasm 27. A product used to increase slipperiness and reduce friction during sex 28. The 2 organs that store and release eggs

Down 1. A chronic virus that breaks down the immune system 2. A safe and effective way to prevent pregnancy after unprotected sex 4. A reproductive cell that combines with an egg to cause a pregnancy. Made in the testes. 5. Any behavior, device, medication, or procedure used to prevent pregnancy 6. The reproductive cell stored in the ovaries and released during ovulation 8. Infections passed during vaginal, anal, or oral sex, or sexual contact 9. The joining of an egg and sperm 11. The time between childhood and adulthood when people mature physically and sexually 12. Assisted reproduction in which fertilization takes place outside the body (usually in a lab). 14. The flow of blood, fluid, and tissue through the vagina that usually lasts from 3 to 7 days 16. Moment when the pre-embryo attaches to the lining of the uterus and pregnancy begins. 19. Can either transmit STDs or result in pregnancy (Vaginal, Anal, Oral) 21. Tube that empties the bladder and carries urine and ejaculate/pre-ejaculate. 22. Ending a pregnancy 23. Organ on the wall of the uterus that provides oxygen and other nourishment to a fetus