Next, air moves into our pharynx. This is the tunnel that contains our intersection between the esophagus, the pipe that allows our food to move into our stomach, and our larynx, the connection between our pharynx and our trachea. Now, the opening of the larynx has a special flapper of cartilage we call our epiglottis, and this allows the movement of air, but does not allow the movement of food into our air passageway we call the trachea. Now, the trachea is also known as our windpipe, and a trachea contains these cartilage rings that essentially allow the trachea to remain open and not to constrict. Now, the trachea eventually moves all the way down to this intersection and intersect. It basically bifurcates.