What does the cartilage in lungs do?

Provides structural support

The cartilage in the lungs, specifically in the form of bronchial cartilages, plays a crucial role in maintaining the structural integrity and patency of the airways. These cartilaginous rings encircle the bronchial tubes, preventing their collapse and ensuring a continuous flow of air during breathing. The structural support provided by the cartilage allows the lungs to expand and contract efficiently, facilitating the process of respiration.