The Bronchial tree helps in the joining of the upper respiratory tract to some parts of the lungs. If you place your hand on the front part of the throat then you can easily have a feel of the structure. This is also referred as the trachea and the bottom part of the organ gets divided into two branches. One usually enters the right lung area and the other merges into the left lung. The main job of the bronchial tree is to spread air to a wide portion as fast as possible. The functioning and the structure of the Bronchial tree is quite simple and there is little complication in the manner in which it works.