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Anatomy Thorax e6f22617

The normal narrowing in the middle of the oesophagus is caused by

A
Azygos vein
B
Hemiazygos vein
C
Right main stem bronchus
D
Left main stem bronchus
High-Yield Explanation
Middle constriction of oesophagus is due to left bronchus .27.5cm/11 inch from insisor teeth. BD CHAURASIA&;S HUMAN ANATOMY VOLUME 1, 6TH Edition . page no 282, fig 20.7

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