Which structure connects the lungs with the trachea?

The structure that connects the lungs with the trachea is the bronchi. After air passes through the trachea, it divides into two primary bronchi: the left main bronchus and the right main bronchus. Each of these bronchi enters the corresponding lung and further branches into smaller bronchi and eventually into bronchioles within the lungs, facilitating the passage of air and the exchange of gases.

Understanding the role of the bronchi is crucial in respiratory anatomy, as they serve as the primary airways that ensure that inhaled air reaches the lungs where gas exchange occurs. This connection via the bronchi is also significant in clinical contexts, such as understanding respiratory diseases or interventions, as obstructive conditions often affect the bronchi first.