Structure of the lung. The lung has a serous coat; a sub-serous, elastic areolar tissue, investing the entire organ, and extending inward between the lobules; and the parenchyma, or true lung-tissue, composed of lobules and alveoli (or air-cells).

Structure of the Lungs

Structure of the lung. The lung has a serous coat; a sub-serous, elastic areolar tissue, investing the…