Lesson 27: Embryology Week 3 Quizellenj2023-01-13T13:49:28-05:00 Please sign up for the course before taking this quiz. 1. What nutrient should women take before and during pregnancy to help prevent neural tube defects?1 vitamin D riboflavin ( a B vitamin) vitamin B 12 folic acid (a B vitamin) vitamin C vitamin A 2. Which means “stomach side”?1 ventral dorsal 3. The heart begins as 2 tubes.1 True False 4. If the neural tube does not close properly, this can lead to a condition called:1 spina bifida paralysis cerebral palsy carcinoma 5. The heart tubes arise from the:1 endoderm mesoderm yolk sac ectoderm 6. Which is NOT true of the notochord?1 It secretes a chemical called Sonic Hedgehog (SHH). It will turn into the spinal cord. It will control the organization of body tissues. 7. Neural crest cells will turn into any of these EXCEPT:1 lining of mouth and stomach nerves of face and head nerves around heart and spinal cord melanocyte skin cells bones and tissues of the middle ear 8. After the disc curls up, what is the inside called? (usually colored yellow)1 the gut tube the primitive groove the neural tube 9. Which is the correct order?1 implantation, blastulation, gasturlation, neurulation blastulation, gastrulation, implantation, neurulation implantation, neurulation, blastulation, gastrulation blastulation, implantation, gastrulation, neurulation 10. The side of the ectoderm with the primitive streak will become:1 the inside, including the digestive tract the side that will develop into legs and feet the brain and nervous system the side that will develop into the head 11. What goes on in the yolk sac?1 tiny blood vessels form the lining of the intestines begins to form nutrients are produced for the embryo nothing important 12. The somites will eventually turn into the tissues that make the:1 arm and leg bones spine face digestive system 13. Blood vessels form with blood cells already inside them.1 True False 14. The ectoderm will curl around the rest of the germ disc.1 True False 15. Sonic Hedgehog protein wasn’t really named after Sonic the Hedgehog.1 True False Lesson 26: Embryology Week 2 Lesson 28: Embryology Week 4 Back to: Lesson 27: Embryology Week 3
