| A | B |
|---|
| testis | sperm-producing organ |
| ovulation | release of egg from the ovary |
| sperm | male sex cells |
| embryo | name for the unborn child the first two months |
| menopause | ending of the menstrual cycle with age |
| uterus | place where a fertilized egg develops into a baby |
| amniotic sac | membrane that protects the unborn baby |
| semen | nourishing fluid for sperm |
| ovary | egg -producing organ |
| vagina | birth canal |
| menstrual cycle | monthly changes in the female reproductive system when an egg inside an ovary matures, the lining of the uterus thickens and prepares to receive a fertilized egg |
| fetus | the unborn child after the first two months of pregnancy |
| infancy | four weeks to 1 year |
| childhood | stage from 1 year to 12 |
| adolescence | onset of puberty -12 to 18 years |
| adulthood | end of adolescence and extends to old age. |
| centenarian | people a hundred years old and over |
| menstruation | monthly discharge of blood and tissue cells |
| pregnancy | period of time where fertilized eg develops until the birth of the baby |
| untrasound | device that uses sound waves to produce photographic imagies of the fetus |
