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