KEY Terms

1. when a baby is born between 39 weeks, 0 days and 40 weeks, 6 days
3. unborn human in the very early stages of development, weeks 3–8, when cells continue to divide and begin to take on different functions
8. a pair of tubes through which female eggs travel from the ovaries to
10. the process in a woman of discharging blood and other materials from the lining of the uterus at intervals of about a month
11. the spontaneous loss of a woman's pregnancy before the 20th week that can be both physically and emotionally painful

2. the sampling of amniotic fluid using a hollow needle inserted into the uterus, to screen for developmental abnormalities in a fetus
4. fertilized egg after 5 days, a rapidly dividing ball of cells
5. is a developing human from usually two months after conception to birth
6. a B vitamin (found in dark leafy greens, oranges, nuts, beans, and peas) that the body needs to make DNA and other genetic material, and to help cells divide
7. the joining of a sperm and egg, also known as fertilization
9. a simple sugar that is an important energy source in living organisms and is a component of many carbohydrates