The bronchial tubes begin where the trachea splits (bifurcates) into two primary paths:
(or bronchi) are the large air passages that connect the windpipe (trachea) to the lungs. They function as the main delivery system for air, branching out into a complex "bronchial tree" that ensures oxygen reaches the deep tissues of the lungs. Anatomy and Structure bronchial tube
: These branch off the main bronchi to supply the specific lobes of the lungs (three on the right, two on the left). The bronchial tubes begin where the trachea splits