What structure allows air to pass between the larynx and bronchi?

The structure that allows air to pass between the larynx and bronchi is the trachea. The trachea, also known as the windpipe, is a tubular structure made of cartilage and smooth muscle that extends from the larynx down to the bronchi, facilitating the flow of air to and from the lungs. It branches into the right and left bronchi, which lead to the respective lungs.