A coin is struck at 25 cm from incisor in the esophagus, this place coincides with -
Ans-C Barium swallow may show a constriction at three site : QCricopharyngeal junction - Narrowest point (15 cm from incisor) QMiddle narrowing - crossing of the left main stem bronchus and aortic arch (25 cm from incisor). QLower most narrowing - At the hiatus of the diaphragm (40 cm from incisor)
Cricopharyngeal junction
Bronchus bifurfation
Aortic arch
Oesophago-gastric junction