The bronchi are lined with the same type of mucus that lines the rest of the respiratory tract. Foreign objects breathed into the lungs often end up in the right bronchus, as it is larger than the left. Once inside the lungs, each bronchus is further divided into five smaller, secondary bronchi, which provide air to the lobes of the lungs.<\/p>\n
\nOnce inside the lungs, each bronchus is further divided into five smaller, secondary bronchi, which provide air to the lobes of the lungs. The secondary bronchi continue to branch off to form the tertiary bronchi, which are further divided into terminal bronchioles.<\/p>\n
\nThey lead to the alveoli (tiny air sacs where the exchange of carbon dioxide and oxygen occurs) by way of alveolar ducts. Together, the trachea and the two primary bronchi are referred to as the bronchial tree. At the end of the bronchial tree lie the alveolar ducts, the alveolar sacs, and finally the alveoli.<\/p>\n","protected":false},"excerpt":{"rendered":"