Respiratory System Development — Respiratory & Digestive Development

Respiratory System Development MCQs: practice questions

Sample Respiratory System Development multiple-choice questions from Respiratory & Digestive Development.

1. What is the most common type of tracheoesophageal fistula in the source?

   • A. Esophageal atresia with distal tracheoesophageal fistula
   • B. H-type fistula
   • C. Isolated esophageal atresia
   • D. Isolated tracheal atresia
   • E. Proximal fistula with distal atresia

2. During which period does the blood-air barrier become established?

   • A. Terminal sac period
   • B. Embryonic period
   • C. Canalicular period
   • D. Pseudoglandular period
   • E. Alveolar period

3. How many secondary bronchi develop on the left side?

   • A. Three
   • B. Four
   • C. Two
   • D. One
   • E. Five

4. What structures arise from the distal end of the respiratory diverticulum?

   • A. Terminal sacs
   • B. Secondary bronchi
   • C. Primary bronchial buds
   • D. Alveolar ducts
   • E. Pulmonary veins

5. What is the first visible sign of lower respiratory development?

   • A. Pleural cavity
   • B. Primary bronchial bud
   • C. Alveolar sac
   • D. Tracheoesophageal septum
   • E. Respiratory diverticulum

6. What do secondary bronchi ultimately establish?

7. What condition results from failure of normal lung tissue development?

8. Which condition is strongly associated with pulmonary hypoplasia?

9. Which cells produce pulmonary surfactant?

10. During which stage do respiratory bronchioles first appear?

11. How many secondary bronchi develop on the right side?

12. At approximately what week does the respiratory diverticulum first appear?

13. Which embryonic tissue forms the cartilage, smooth muscle, and connective tissue of the bronchi?

14. How many secondary bronchi develop on the left side?

15. Which structure forms the parietal pleura?

16. What causes congenital lobar emphysema?

17. What is the embryologic origin of the respiratory tract epithelium?

18. Which condition is strongly associated with pulmonary hypoplasia?

19. What is a bronchogenic cyst?

20. Which structure forms the parietal pleura?

21. Which structure forms the visceral pleura of the lungs?

22. During which stage do terminal sacs develop?

23. Which embryonic structure gives rise to the epithelium lining the trachea?

24. What is the principal function of pulmonary surfactant?

25. Which developmental change allows increasingly effective fetal gas exchange before birth?

26. How many secondary bronchi develop on the right side?

27. What is the principal function of pulmonary surfactant?

28. At approximately what week does the respiratory diverticulum first appear?

29. What separates the developing trachea from the esophagus?

30. What do tertiary bronchi correspond to?

31. What separates the developing trachea from the esophagus?

32. What clinical finding is characteristic of esophageal atresia with a distal tracheoesophageal fistula?

33. What do secondary bronchi ultimately establish?

34. Which structure forms the visceral pleura of the lungs?

35. Which cells produce pulmonary surfactant?

36. During which period does the blood-air barrier become established?

37. During which lung-development stage do terminal bronchioles form?

38. What embryonic structure gives rise to the respiratory diverticulum?

39. During which stage do terminal sacs develop?

40. During which stage do respiratory bronchioles first appear?

41. What is the embryologic origin of the pulmonary connective tissue and smooth muscle?

42. Which embryonic tissue forms the cartilage, smooth muscle, and connective tissue of the bronchi?

43. What embryonic structure gives rise to the respiratory diverticulum?

44. What clinical finding is characteristic of esophageal atresia with a distal tracheoesophageal fistula?

45. Which embryonic structure gives rise to the epithelium lining the trachea?

46. What is the most common type of tracheoesophageal fistula in the source?

47. Which congenital abnormality results from abnormal separation of the trachea and esophagus?

48. What is the first visible sign of lower respiratory development?

49. What is a bronchogenic cyst?

50. What condition results from failure of normal lung tissue development?

51. Which developmental change allows increasingly effective fetal gas exchange before birth?

52. What structures arise from the distal end of the respiratory diverticulum?

53. Which congenital abnormality results from abnormal separation of the trachea and esophagus?

54. What is the embryologic origin of the pulmonary connective tissue and smooth muscle?

55. What causes congenital lobar emphysema?

56. What do tertiary bronchi correspond to?

57. Which stage of lung development is characterized by a gland-like appearance but no structures capable of gas exchange?

58. Which stage of lung development is characterized by a gland-like appearance but no structures capable of gas exchange?

59. What is the embryologic origin of the respiratory tract epithelium?

60. During which lung-development stage do terminal bronchioles form?