The Windpipe is a wide and hollow tube in the throat that connects the mouth and the nose to the lungs. It is also called trachea. It is an integral part of the body’s airway as it provides air flow to and from the lungs for respiration by transporting air through the nose or mouth into the lungs. It is located underneath the voice box. Once, it reaches the end of the breastbone, it splits into two tubes called bronchi. One bronchus is attached to the left lung and the other is attached to the right lung. 20 rings protect it and keep it from closing.