Anatomy Constrictions of esophagus are present at all sites except: A At cricopharyngeal junction B Where it is crossed by the arch of aorta C Where it is surrounded by right crus of diaphragm D Where it is crossed by the left principal bronchus 💡 Explanation Constrictions of esophagus are present at all sites except: ✓ Correct Answer: C. Where it is surrounded by right crus of diaphragm