When a person sees a doctor about a respiratory illness, the doctor will want to determine if the sickness is in the upper respiratory tract or the lower respiratory tract. The starting point for the lower respiratory system is the trachea. Which structures are part of the upper respiratory system? Select three options

The structures that are part of the upper respiratory system are the nose, the pharynx, and the larynx.

Explanation:

The air enters through the nose and travels to the pharynx, which has three parts. The nasopharynx connects with the nose, the oropharynx connects with the mouth, and the laryngopharynx connects with the larynx. Then, the air goes to the larynx, where the vocal folds are. Once that it passes the vocal folds, the air is in the lower respiratory tract.