| A | B |
|---|
| Amniocentesis | the sampling of amniotic fluid using a hollow needle inserted into the uterus, to screen for developmental abnormalities in a fetus |
| Amniotic fluid | the fluid surrounding a fetus within the amnion |
| Amniotic sac | the fluid-filled sac that contains and protects a fetus in the womb |
| Blastocyst | a fertilized egg after 5 days, a rapidly dividing ball of cells |
| Cervix | the lower, narrow end of the uterus that forms a canal between the uterus and vagina |
| Conception | the joining of a sperm and egg, also known as fertilization |
| Diagnostic prenatal test | testing the fetus before birth (prenatally) to determine whether the fetus has certain abnormalities, including certain hereditary or spontaneous genetic disorders |
| Embryo | an unborn human in the very early stages of development, weeks 3–8, when cells continue to divide and begin to take on different functions |
| Embryonic stage | the stage starting when the blastocyst implants into the uterus through the eighth week following fertilization |
| Fallopian tubes | a pair of tubes through which female eggs travel from the ovaries to the uterus |
| Fetal stage | extends from the beginning of the ninth week after fertilization to about 38 weeks after fertilization |
| Fetus | a developing human from usually two months after conception to birth |
| Full-term pregnancy | when a baby is born between 39 weeks, 0 days and 40 weeks, 6 days |
