What is the function of the abundant elastic fibers that occur in the stroma of the lung and around all respiratory tubes from the trachea through the respiratory tree?

The abundant elastic fibers in the stroma of the lung and surrounding the respiratory tubes provide structural support and flexibility. They enable the airways to expand and contract during breathing, facilitating efficient airflow. Additionally, these fibers help maintain the shape of the airways and alveoli, preventing collapse and allowing for optimal gas exchange. Overall, they play a crucial role in the mechanical properties of the lung, enhancing respiratory function.