What percent of the lung tissue is solid?

Lung tissue is primarily composed of air-filled spaces, with only a small percentage being solid. Typically, the solid components of lung tissue, including blood vessels, connective tissue, and cells, account for about 10-20% of the total lung volume. The remaining 80-90% consists of air-filled alveoli and bronchioles, which facilitate gas exchange. Therefore, the solid portion of lung tissue is relatively minimal compared to the air spaces.