Crossword Puzzle Parts of the nasal systemOnline version flow of air into the lungs and out of them by Christopher Turner 1 one of the white membrane folds attached by cartilages of the larynx 2 formed from hyaline cartilage that are connected by dense connective tissue 3 tube composed of smooth muscle and connective tissue 4 trachea branches into a right and left one of these 5 is a tube formed by skeletal muscle and has three major regions 6 common condition that affects the lungs 7 connects the pharynx to the trachea 6 4 1 3 7 5