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