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 supply the specific lobes of the lungs (three on the right, two on the left). bronchial tube

: The trachea divides into the right main bronchus (shorter and wider) and the left main bronchus (longer and narrower). : The smallest branches that eventually lead to

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

The bronchial tubes begin where the trachea splits (bifurcates) into two primary paths: