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