Advanced Esophageal Constrictions Quiz

Q1. Which normal esophageal constriction is generally the narrowest and is a common site of foreign-body impaction?

• Aortic constriction
• Bronchial constriction
• Pharyngoesophageal constriction
• Diaphragmatic constriction

Q2. A radiographic contrast study shows an external impression on the upper thoracic esophagus produced by a major vessel. Which structure is responsible?

• Aortic arch
• Inferior vena cava
• Femoral artery
• Right coronary artery

Q3. A second thoracic impression below the aortic impression is normally produced by which structure?

• Thoracic duct
• Left main bronchus
• Right phrenic nerve
• Azygos vein

Q4. An endoscope has passed the bronchial constriction and continues inferiorly. Which normal constriction will it encounter next?

• Pharyngoesophageal constriction
• Diaphragmatic constriction
• Pyloric constriction
• Aortic constriction

Q5. Which constriction is most directly associated with the cricopharyngeal part of the inferior pharyngeal constrictor?

• Diaphragmatic constriction
• Pharyngoesophageal constriction
• Aortic constriction
• Bronchial constriction

Q6. Which normal esophageal constriction is created predominantly by skeletal muscle fibers surrounding the esophageal hiatus?

• Diaphragmatic constriction
• Aortic constriction
• Aortic hiatus constriction
• Bronchial constriction

Q7. Why can enlargement of the aortic arch alter the esophageal lumen?

• The aortic arch lies inside the esophageal lumen
• The esophagus passes through the aortic valve
• The aortic arch has a close crossing relationship with the esophagus
• The aortic arch forms the lower esophageal sphincter

Q8. A swallowed object is seen near the T10 level. At which normal narrowing is it most likely located?

• Pharyngoesophageal constriction
• Diaphragmatic constriction
• Bronchial constriction
• Aortic constriction

Q9. Which statement best explains why the aortic and bronchial impressions may sometimes be considered together clinically?

• Both structures pass through the esophageal lumen
• The two crossing structures produce closely spaced thoracic impressions
• The aortic arch and left main bronchus are the same anatomical structure
• Both constrictions occur at the C6 vertebral level

Q10. Which statement best integrates the anatomy and clinical significance of the normal esophageal constrictions?

• They occur only in the abdominal portion of the esophagus
• They are openings through which thoracic arteries enter the esophageal lumen
• They are predictable narrow sites created by sphincteric, crossing, and diaphragmatic relationships and are important in imaging and instrumentation
• They are pathological stenoses that should never occur in a normal esophagus