| A | B |
|---|
| amniotic fluid | Liguid that surrounds and protects the developing bady in the uterus during pregnancy. |
| conception | The union of an ovum and sperm, resulting in the beginning of a pregancy. |
| embryo | The developing baby from about the third to the eighth week of pregancy. |
| fetus | The developing baby from the eight or ninth week of pregnancy until birth. |
| ovum | Female cell, or egg, needed for reproduction. |
| placenta | The tissue in the uterus of pregnant woman that is rich in blood vessels and plays a role in bringing food and oxygen to a developing baby. |
| prenatal development | Physical changes that take place before a baby is born. |
| sperm | Male cell needed for reproduction. |
| umbilical cord | A long tube that connects the placenta to the developing baby during pregnancy; carries food and oxygen to the baby. |
| uterus | The organ in a woman's body in which a baby develops during pregnancy. |
| zygote | The fertilized egg. |
| chromosomes | Tiny threadlike particles in the nucleus of every cell. |
| dominant | The gene that dictates the way a trait is expressed. |
| genes | The unit that determines inherited characteristics. |
| infertility | The inability to become pregnnt. |
| recessive | The gene that is expressed as a trait only if paired with a matching recessive gene. |
| surrogate | A substitute. |
| aminiocentesis | A prenatal test performed by withdrawing a sample of the amniotic fluid surrounding an unborn baby and testing that fluid for indications of specific birth defects or other health problem. |
| birth defects | Problems babies are born with which threaten their health or ability to live. |
| chorionic villi sampling | A prenatal test for specific birth defects performed by sampling small amounts og tissue from the membrane that encases the fetus. |
| miscarriage | The unexpected death of a developimg baby before 20 weeks of pregnancy. |
| stillbirth | The death of a developing baby. |
| ultrasound | A prenatal test performed by using sound waves to make a video image of an unborn baby to check for specific health problem. |
| featl alcohol effects | A condition less severe than FAS that results in damage to the developing baby. |
| fetal alcohol sundrome | A condition that includes physical and mental problems that results from a mother's drinking alcohol while she is pregnant. |
