What is the primary function of the pharynx in the respiratory system?

The primary function of the pharynx in the respiratory system is to connect the nasal passages to the larynx. This structure serves as a vital conduit that allows air to travel from the nasal cavity or mouth to the larynx, and subsequently into the trachea and lungs for gas exchange. The pharynx plays an essential role in both the respiratory and digestive systems, acting as a passageway for air and food, but its key function within the respiratory context is to ensure that air enters the lower respiratory tract efficiently. The anatomical positioning of the pharynx is crucial for the proper functioning of the respiratory system, enabling the movement of air while also being closely associated with other functions such as swallowing.