| A | B |
| Amniotic Fluid | Fluid in the sac around the embryo that protects the developing baby. |
| Conception | When the sperm and ovum unite and pregnancy begins |
| Embryo | The second stage of pregnancy about the third through the eighth week |
| Fetus | The third and last stage of pregnancy eight or ninth week and last until birth. |
| Ovum | The female egg cell. |
| Placenta | A tissue very rich in blood vessels that carries food and oxygen through the umbilical cord to the unborn baby. |
| Prenatal Development | Physical changes that takes place before the baby is born. |
| Sperm | Male sex cell. |
| Umbilical Cord | A long tube that connects the placenta to the developing baby during pregnancy; carries food and ozygen to be baby. |
| Uterus | The organ in a woman's body in which a baby develops during pregnancy. |
| Zygote | The first stage of pregnancy when the egg becomes fertilized. |
| Chromosomes | 46 threadlike particles the the necleus of every cell |
| dominant | the stronger gene that controlls a particular characteristic |
| genes | units that determine the child's inherited characteristics |
| infertility | the inability to become pregnant |
| recessive | a weaker gene that will not be expressed |
| surrogate | a substitute mother, a woman who becomes pregnant for another woman |
| aminicentesis | the process of withdrawing a sample of amniotic fluid surrounding the unborn baby for testing |
| bith defect | serious problems that threaten the baby's health or ability to survive |
| chorionic villi sampling | a sampling of tissue from the membrane that encases the fetus inorder to detect bith defects |
| miscarriage | when the baby dies before 20 weeks |
| stillbirth | when the baby dies after 20 weeks |
| ultrasound | uses sound waves to make a video image of an unborn baby |
| fetal alcohol effects | less sever effects of FAS but damage occurs when the mother drinks alcohol during pregnancy |
| fetal alcohol syndrome | physical and mental problems that occur when the mother drinks alcohol during pregnancy |