respiratory system: 1 nostril, 2 nose, 3 nasal cavity, 4 superior nasal concha, 5 middle nasal concha, 6 inferior nasal concha, 7 nasopharynx, 8 oropharynx, 9 laryngopharynx (7 through 9 comprise the pharynx), 10 larynx, 11 trachea, 12 bronchus, 13 lung, 14 thyroid cartilage