Trachea

The trachea, also called the windpipe, is a tube-like organ in the human body responsible for allowing air to pass from the nose and mouth to the lungs. Composed of cartilage rings and lined with ciliated cells, the trachea is vital for helping the body breathe. Its purpose is two-fold: to filter and warm the air entering the lungs and to protect the lung tissue from inhaled dust, bacteria and other particles. The trachea also provides a passage for digestive juices and enzymes to the esophagus. Abnormalities of the trachea can lead to headaches, coughing, wheezing and difficulty breathing, all of which require specialized medical attention.