Esophagus Pierces the diaphragm at the level of

Esophagus It is a fibromuscular tube, about 25 cm long in an adult. It extends from the lower end of pharynx (C6) to the cardiac end of stomach (T11). It shows three normal constrictions and it is impoant to know their location at oesophagoscopy. They are: 1. At pharyngo-oesophageal junction (C6)--15 cm from the upper incisors. 2. At crossing of arch of aoa and left main bronchus (T4)--25 cm from upper incisors. 3. Where it pierces the diaphragm (T10)--40 cm from upper incisors. Ref:- Dhingra; pg num:-340