Air reaches the lungs through two tubes called __________.

Air reaches the lungs through two bronchi, which are the main passageways that branch off from the trachea. Each bronchus leads to one lung, facilitating the movement of air into the lung tissues where gas exchange occurs. The structure of the bronchi is designed to allow for efficient airflow while also protecting the lungs from particles and pathogens.

The other structures mentioned serve different roles in the respiratory system. The larynx and pharynx are involved in the processes of airflow regulation and voice production, but they do not directly transport air to the lungs. Alveoli are tiny air sacs in the lungs where the critical exchange of oxygen and carbon dioxide occurs, but they are not tubes for air transport. Bronchioles are smaller branches that lead from the bronchi into the lung tissue itself and further distribute air within the lungs, but they are not the initial pathways for air entering the lungs.