| A | B |
|---|
| testosterone | male hormone |
| fetus | last 7 months of prenatal development |
| semen | fluid ejaculated from the penis |
| fertilization | sperm cell joins the egg cell |
| erection | when the penis becomes engorged and hard |
| ovaries | glands that produce the egg cells and hormones |
| egg cells | cells produced in the ovaries |
| cervix | entrance to the uterus |
| ejaculation | when the semen leaves the penis |
| puberty | begins at about age 12 or 13 |
| Fallopian tubes | where fertilization takes place |
| embryo | first two months of development in the uterus |
| estrogen | a hormone produced in the ovaries |
| vagina | female organ of intercourse; birth canal |
| sperm cells | cells produced in the testes |
| placenta | organ that nourishes the fetus |
| uterus | houses the fetus during pregnancy |
| vulva | folds of skin outside the vagina |
| prostate gland | adds a chemical fluid to the semen (powerade) |
| vas deferens | tube that carries sperm from the testes |
| epididymis | stores sperm cells |
| scrotum | sac that regulates the temperature of the testicles |
| urethra | brings urine and semen out of the body through the penis |
| seminal vesicles | adds a sugary fluid to the semen |
| testes | organ that produces sperm |
