What is the function of the wind pipe in the respiratory system?

The windpipe, or trachea, serves as a crucial passage for air to travel between the larynx and the lungs. It is lined with cilia and mucus that trap and expel foreign particles and pathogens, helping to keep the respiratory system clear. The trachea also divides into two bronchi, directing air into each lung for gas exchange. Its structure, reinforced by cartilage rings, ensures it remains open for unobstructed airflow.