Lung Surfaces

• • The surfaces of the lungs are named for the structures that come into contact with the lungs. Connective tissue from the root of the lung travels inward, forming trabeculae and septa that partition the lobes into smaller compartments.
• The curving anterior costal surface of the lungs contacts the inner contours of the rib cage
• The mediastinal surface contains the hilum of the lung
• The left lung has an indentation, the cardiac notch
• The connective tissue of the root of each lung extend inward, forming fibrous partitions, or trabeculae
• The terminal connective tissue partitions are called interlobular septa
• These septa divide the lung into pulmonary lobules, each lobule is supplied by branches of the pulmonary arteries, pulmonary veins, and respiratory passageways