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NEET-PG Quiz: Development of Fetus
NEET-PG Level Practice Quiz
Topic: Development of Fetus
Total Questions: 20
Total Marks: 20
Each question carries 1 mark.
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1. The fetal period begins at the beginning of:
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3rd week
5th week
9th week
12th week
2. The embryonic period is primarily characterized by:
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Rapid increase in fetal weight
Organogenesis
Maturation of existing organs only
Maximum fat deposition
3. The most critical period for structural congenital malformations due to teratogen exposure is:
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First 2 weeks
3rd–8th weeks
9th–12th weeks
20th–24th weeks
4. During normal development, the primitive streak normally disappears by approximately the:
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End of 1st week
End of 2nd week
End of 4th week
End of 8th week
5. The neural tube develops primarily from:
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Endoderm
Mesoderm
Ectoderm
Extraembryonic mesoderm
6. Failure of closure of the cranial neuropore most commonly results in:
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Spina bifida
Anencephaly
Omphalocele
Gastroschisis
7. Failure of closure of the caudal neuropore is classically associated with:
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Anencephaly
Holoprosencephaly
Neural tube defects such as spina bifida
Omphalocele
8. The notochord plays an important role in:
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Formation of the epidermis
Induction of the neural plate
Formation of the yolk sac
Formation of the amniotic cavity
9. The somites are derived from:
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Paraxial mesoderm
Intermediate mesoderm
Lateral plate mesoderm
Endoderm
10. Which part of the somite gives rise to the vertebrae and ribs?
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Myotome
Dermatome
Sclerotome
Intermediate mesoderm
11. The myotome of the somite primarily contributes to:
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Skeletal muscle
Dermis
Vertebral bodies
Kidneys
12. The definitive kidney (metanephros) begins to develop during approximately the:
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2nd week
4th week
5th week
10th week
13. The respiratory diverticulum, which gives rise to the lower respiratory tract, develops as an outgrowth from the:
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Ectoderm
Foregut endoderm
Midgut endoderm
Mesoderm
14. The epithelial lining of most of the gastrointestinal tract is derived from:
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Ectoderm
Mesoderm
Endoderm
Neural crest
15. Physiological herniation of the midgut into the umbilical cord normally occurs around:
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3rd week
5th week
6th week
12th week
16. The midgut normally returns to the abdominal cavity during approximately the:
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6th week
8th week
10th week
14th week
17. Which fetal structure allows blood to bypass most of the fetal liver?
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Foramen ovale
Ductus arteriosus
Ductus venosus
Umbilical artery
18. The fetal vessel carrying oxygenated blood from the placenta toward the fetus is the:
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Umbilical artery
Umbilical vein
Ductus arteriosus
Inferior vena cava
19. The fetal circulation pathway that allows blood to pass from the right atrium directly toward the left atrium is the:
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Ductus venosus
Ductus arteriosus
Foramen ovale
Umbilical vein
20. Which of the following best describes the major event during the fetal period?
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Formation of the three germ layers
Implantation and bilaminar disc formation
Organogenesis and establishment of the neural tube
Growth and functional maturation of already formed organs
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