Intermediate Esophageal Constrictions Quiz

Q1. Which structure is chiefly responsible for the muscular component of the pharyngoesophageal constriction?

• Sternocleidomastoid
• Transversus thoracis
• Cricopharyngeus
• Pectoralis major

Q2. The superior esophageal constriction lies near the inferior border of which cartilage?

• Costal cartilage
• Nasal cartilage
• Epiglottic cartilage
• Cricoid cartilage

Q3. Which relationship causes the aortic constriction of the esophagus?

• Entry of the esophagus into the pericardial cavity
• Crossing of the esophagus by the femoral artery
• Crossing of the esophagus by the aortic arch
• Passage of the esophagus through the inferior vena cava

Q4. The bronchial constriction is produced as which structure passes anterior to the esophagus?

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

Q5. Which pair of constrictions is caused principally by external cardiovascular and airway structures?

• Aortic and bronchial constrictions
• Pyloric and duodenal constrictions
• Pharyngoesophageal and diaphragmatic constrictions
• Cervical and gastric constrictions

Q6. Which diaphragmatic structure contributes most directly to the esophageal hiatus?

• Right crus of the diaphragm
• Xiphoid process
• Left costal margin only
• Central tendon only

Q7. Which constriction is encountered immediately before the esophagus enters the abdominal cavity?

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

Q8. Why are esophageal constrictions particularly relevant when a patient swallows a foreign object?

• The reduced luminal diameter favors impaction
• The constrictions contain pleural fluid
• The constrictions lack any muscular tissue
• The constrictions open directly into arteries

Q9. During endoscopy, why must the locations of normal esophageal constrictions be recognized?

• They are normal openings into the pleural cavities
• They mark sites where the esophagus becomes an artery
• They contain the recurrent laryngeal nerves within the lumen
• They are normal narrow sites where instruments require careful passage

Q10. Which statement best distinguishes intrinsic and extrinsic contributions to esophageal narrowing?

• The bronchial constriction is caused by the diaphragm
• All constrictions are produced exclusively by arteries
• All constrictions are produced exclusively by esophageal smooth muscle
• The upper constriction has a muscular component, while the aortic and bronchial constrictions are caused by external structures