Visible Embryo Internet Activity

Go to the website (you can get to this from the class schedule link on my website). Click on each of the stages from fertilization to 40 weeks and answer the following questions as you do.

  1. Stage 1: How long can sperm survive?
  2. Stage 2: How long does each cell division of cleavage take?
  3. Stage 3: What is the cavity in the center of the morula called?
  4. Stage 4: What hormone is released by trophoblast cells?
  5. Stage 5: What is the ideal implantation site?
  6. Stage 6: What forms during gastrulation in the area of the placenta?
  7. Stage 7: Name one thing the mesoderm will eventually form?
  8. Stage 8: What is one of the first organs to develop?
  9. Stage 9: How many pairs of somites are present?
  10. Stage 10: What appear as thickened circles just off the neural folds?
  11. Stage 11: What is the shape of the embryo?
  12. Stage 12: What may appear in the heart at this stage?
  13. Stage 13: Name one organ that begins developing at this stage?
  14. Stage 14: What valves begin to form in the heart at this stage?
  15. Stage 15: What appears in the bronchial tubes in this stage?
  16. Stage 16: What is the first part of the face to establish?
  17. Stage 17: What arrives in the genital area in this stage?
  18. Stage 18: What appears in the chest in this stage?
  19. Stage 19: What is first detected in the brain at this stage?
  20. Stage 20: What is distinguishable at this stage?
  21. Stage 21: Where are the eyes located at this stage?
  22. Stage 22: What ends with stage 22?
  23. Stage 23: What forms on the tongue at this stage?
  24. Week 10-11: What enables the fetus to make noise?
  25. Week 12-13: Can the mother feel the movement of the fetus at this point?
  26. Week 14: How many quarts of blood does the fetal heart pump per day?
  27. Week 16: What happens to the nerves?
  28. Week 18: What is the temporary fetal hair called?
  29. Week 20: What begins in males at this time?
  30. Week 22: What hardens in the ears allowing the fetus to recognize sounds?
  31. Week 24: What do the lungs produce?
  32. Week 26: What % body fat does the fetus have?
  33. Week 28: What takes over the production of red blood cells?
  34. Week 30: What happens to the iris?
  35. Week 32: What color are the fetus’ eyes?
  36. Week 34: What color is the fetus’ skin?
  37. Week 36: What temperature is the fetal body?
  38. Week 38: What is missing in the eyes that appear a few weeks after birth?
  39. Week 40: How many reflex behaviors is the baby born with?
  40. What did you think of this web site and activity?