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