👉 Throats are openings in the walls of the lungs that allow air to flow through them. They are important for providing oxygen to the blood and removing waste products from it. The structure of a throat is composed of several layers, including the outer layer called alveoli, which help distribute carbon dioxide and other gases out of the body; the middle layer called bronchi, which carry oxygen-rich air in through the trachea and into the lungs; and the inner layer called bronchioles