Prenatal Development

2. what the baby is referred as
4. lining of the uterus has thickened enough to provide a place for the zygote to attach
8. units that determine a human's inherited characteristics
11. the organ in a woman's body in which a baby develops during pregnancy
12. tiny threadlike structures in the nucleus of every cell
13. this is known as german measles
14. the inability to become pregnant
16. fumes that are inhaled into the lungs
17. what the developing baby is called in 3 weeks of pregnancy

1. occurs about every 28 days when an ovum is released by one of a woman's two ovaries
3. when sperm reaches the fallopian tube
5. when the baby does not develop normally which causes the baby to die
6. every person has 20,000-25,000 genes that determine their genetic makeup
7. using soundwaves to make video image
9. it comes from a male cell and is used to create a baby
10. a woman who becomes pregnant to have a baby for another woman
15. complex molecules