What is the role of bronchi in the respiratory system?

The role of bronchi in the respiratory system is to connect the trachea to the lungs. The trachea, or windpipe, branches into two main bronchi—one for each lung. These passages are essential for conducting air, allowing for the movement of air into the smaller bronchi and bronchioles within the lungs. This structure is crucial for ensuring that air reaches the alveoli, where gas exchange occurs. The bronchi also play a role in maintaining the airway and are lined with mucus and cilia that help to trap and expel foreign particles, but their primary function is the direct airway connection to facilitate respiration.