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Prenatal development: Quiz

  

Question 1: The blastocyst reaches the ________ at roughly the fifth day after fertilization.
VulvaReproductive systemOvaryUterus

Question 2: This is required so that the trophectoderm cells, which give rise to extra-embryonic structures such as the ________, of the blastocyst can come into contact with the luminal epithelial cells of the endometrium.
Endocrine systemThyroidTesticlePlacenta

Question 3: The ________ begin to form as otic pits.
EarPenisBreastSensory system

Question 4: ________ are produced in the liver.
Red blood cellBlood plasmaHematologyPlatelet

Question 5: A spontaneous abortion, or ________, in the first trimester of pregnancy is usually due to major genetic mistakes or abnormalities in the developing embryo.
Ectopic pregnancyHydatidiform moleMiscarriageBreech birth

Question 6: They will eventually form the ________ and embryonic membranes.
PlacentaTesticleEndocrine systemThyroid

Question 7: What does the following picture show?

  Fetus at 38 weeks after fertilization.[12]
  Fetus at 8 weeks after fertilization.[9]
  Stages during pregnancy. Embryogenesis is marked in green. Weeks and months are numbered by gestation.
  A six week embryonic age or eight week gestational age intact Embyo

Question 8: A neural groove (future spinal cord) forms over the notochord with a ________ bulge at one end.
DigestionBrainNervous systemSensory system

Question 9: What does the following picture show?

  Embryo at 4 weeks after fertilization. The crown-rump length is about 0.2 inches.[7]
  Stages during pregnancy. Embryogenesis is marked in green. Weeks and months are numbered by gestation.
  Fetus at 18 weeks after fertilization.[11]
  Stages during pregnancy. Embryogenesis is marked in green. Weeks and months are numbered by gestation.

Question 10: The inner cell mass forms the embryo, while the outer cell layers form the membranes and ________.
PlacentaTesticleEndocrine systemThyroid
















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