The trachea, commonly known as the windpipe, is a vital tube that connects the throat to the lungs. It allows air to flow in and out during breathing. The trachea is made up of flexible cartilage rings that keep it open, ensuring that air can pass freely. It is lined with a mucous membrane that helps trap dust and other particles, preventing them from entering the lungs. When we inhale, air travels down the trachea and branches into two smaller tubes called bronchi, which lead to each lung. The trachea plays a crucial role in the respiratory system, working alongside other organs like the larynx and diaphragm to facilitate breathing and maintain oxygen levels in the body.