Abstract
AbstractIn 50 lungs prepared as casts, the most common pattern of arrangement of the bronchial arteries, occurring in 30% of all lungs, was that of two posterior bronchial trunks to each side; next in frequency was the pattern of two trunks to the left and one to the right lung. In more than three‐fourths of all cases there were not more than two bronchial arteries on each side. In two‐thirds of the specimens various bronchial arteries arose both directly from the aorta and indirectly from an intercosto‐bronchial trunk. At least one intercosto‐bronchial trunk was present in 37 of the 50 specimens. All such trunks, even those supplying the left lung, took origin from the right side of the aorta, almost always from the first or second posterior segmental aortic branches, i.e., at the level of the fifth or sixth thoracic vertebra. Almost all intercosto‐bronchial trunks yielded a right bronchial artery. Approximately 84% of the left bronchial arteries sprang directly from the aorta. In 22% a single trunk was the source of all bronchial arteries to both lungs, and in 14% this trunk arose directly from the aorta. In 84% also there was at least one bronchial artery that supplied bronchi of both lungs.Arteries arising high on the anterior or right lateral surface of the aorta were found in more than one‐half of the casts, more than three times as frequently as in previously reported dissections.
Published Version
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