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DAILY FREE MCQ CHALLENGE for Medical PG Preparation
What is the uppermost structure in left lung hilum?
A. Pulmonary vein
B. Pulmonary artery
C. Bronchial artery
D. Left mainstem bronchus
TIPSImportant Question from AIIMS 2007
Answer: B. Pulmonary artery
The pulmonary trunk and pulmonary arteries are located approximately at vertebral level T4, where the arteries are inferior to the aortic arch and azygos vein. The pulmonary arteries follow the bronchial tree throughout the lungs.
The relation of the pulmonary arteries to bronchi at the root (hilum) of the lungs can be remembered by the following mnemonic: Right pulmonary artery is Anterior to the right primary bronchus, and the Left pulmonary artery is Superior to the left primary bronchus (RALS).
Reference: Chapter 5. Superior and Posterior Mediastina. In: Morton DA, Foreman K, Albertine KH. eds. The Big Picture: Gross Anatomy. Reference link
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