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