Chapter 19 - Pregnancy

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Across
  1. 2. prevents the placenta from getting enough blood to nourish the fetus
  2. 3. syndrome alcohol related birth defects
  3. 5. when the zygote attaches to the uterine wall
  4. 6. procedure in which a syringe is used to get amniotic fluid for testing
  5. 13. 1st stage of birth
  6. 15. basic units of heredity
  7. 16. 3rd stage of birth
  8. 18. thick blood-rich tissue that nourishes the embryo
  9. 19. a cluster of cells developed between the 3rd and 8th week
  10. 21. the confidence to control one's own body and actions
Down
  1. 1. union of sperm and egg
  2. 4. the chemical unit that makes up chromosomes
  3. 7. spontaneous expulsion of a fetus before the 20th week
  4. 8. threadlike structures found in the nucleus of the cell
  5. 9. a dead fetus expelled from the body after the 20th week
  6. 10. Curvature of the spine
  7. 11. group of cells after the 8th week
  8. 12. sac a thin fluid filled membrane that surrounds the embryo
  9. 14. cord rope-like structure that connects embryo and placenta
  10. 17. the passing of traits from parents to children
  11. 20. the final stage of pregnancy when the uterus contracts