Question

the right pulmonary artery lies anterior to the oesophagus?

Answer 1

Answer:

The right pulmonary artery lies as an important home base structure above the left atrium close to anterior wall of the esophagus. The left atrium is the most easily identifiable home base in the entire mediastinum, hence reference to the left atrium at approximately 30-cm distance can be taken as the initial landmark for beginners.

Explanation:

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