Does the trachea collapse when not in use?

The trachea, or windpipe, is a flexible tube that remains open due to its structure, which includes C-shaped cartilage rings. These rings prevent the trachea from collapsing, even when not actively used for breathing. However, the trachea can temporarily narrow during certain conditions or maneuvers, but it does not completely collapse. Its design ensures that airflow remains possible at all times, providing a clear passage for air to and from the lungs.