ANATOMY OF THE TRACHEOBRONCHIAL TREE
While many valuable studies on the anatomy of the lung are available, there is relatively little found concerning the bronchi, particularly from a bronchoscopic point of view. With increasing interest in bronchoscopy, it is important and necessary that the bronchoscopist, as well as the internist and the thoracic surgeon, should be familiar with those bronchial subdivisions which cannot be visualized endoscopically.In a study of the subject, Hagens1 dissected and measured twenty pairs of lungs from cadavers. A résumé of the results is given in the article. He also made some general observations in regard to the blood vessels about the hilar region. A method of utilizing air-inflated human lungs for teaching and demonstration also is included in the presentation. The reader is referred to this paper if a detailed knowledge of measurements is desired.Jackson and Huber2 studied the anatomy of the bronchial into