These Are The Tubes That Holds The Air Sacs

These are the tubes that holds the air sacs

 

Answer:

These are the BRONCHIAL TUBES (BRONCHUS). ... The bronchial tubes go into your lungs and keep branching off into smaller and smaller tubes until the sacs at the end called alveoli are reached. Your bronchial tubes not only bring the air from your trachea to your alveoli, they also help clean your lungs.