Lung operation. Artwork of the lungs, showing the connections for its blood vessels (arteries and veins) and airways. The main airway leading to each lung is the bronchus. The junction of the two bronchi marks the start of the trachea. The heart is seen between the lungs. The blood vessels running between the heart and the lungs include the pulmonary arteries and the pulmonary veins. An example of an operation on the lung involving these connections is a lung transplant.
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