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ENT Oesophagus ea1af825

Narrowest part of esophagus is at?

A
Cricopharyngeal sphincter
B
At the Aortic constriction
C
At the crossing of left principal bronchus
D
At the diaphragmatic opening
High-Yield Explanation
Ans. is 'a' i.e., Cricopharyngeal sphincter * The narrowest part of esophagus is its commencement at the cricopharyngeal sphincter.

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