Can you give simple answer to where are bronchial tubes?

Repiratory Tree. Bronchial tubes are part of the internal structure called Repiratory Tree, and is part of Respiratory System. The Trachea also called wind pipe allows the air to flow into two hollow branches called the bronchi or Bronchial Tubes One tube is connected to right lung and the other to left lung.These extend into many branches known as bronchioles that are responsible for air exchange in each lung.
Airways. The bronchial tubes are part of the airway tree in your chest. The windpipe (trachea) divides into 2 main bronchi (left & right). Then, there are multiple divisions of these tubes to make up the airway tree. The tubes end in air sacs where oxygen & carbon dioxide are exchanged.