What are the functions of pharynx

There are basically 3 types of pharynx- nasopharynx, oropharynx and laryngopharynx.
The function of the pharynx are:-
1. To transport the food from mouth to esophagus. 
2. To warm, moisten and filter the air, before it moves to the trachea, and then to the bronchi, the bronchioles, the alveoli and at last to the lungs.
    Therefore, pharynx(or throat) is a part of both- digestive and respiratory systems.
3. It is also important for vocalization.