The trachea contain seromucous glands and c shaped cartilage rings, while the bronchi contain incomplete cartilage plates and does not have the seromucous. The trachea is a structure present in the throat of all animals. it is adapted to pass food into the stomachusing specialized muscle contractions. Bronchi are two like structures that lead to the lungs and branch off into the broncoe, they are formed when the trachea divides.