Tube: Bronchial

: These branch off the main bronchi to supply the specific lobes of the lungs (three on the right, two on the left).

(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

: The smallest branches that eventually lead to alveoli , the microscopic air sacs where gas exchange occurs. : These branch off the main bronchi to

: Further divisions that supply smaller segments of the lungs. bronchial tube