What is the primary function of the pharynx in the human body?

The pharynx primarily functions to facilitate air entry and exit in the human body. It serves as a passageway that connects the nasal cavity and the mouth to the larynx and esophagus. This anatomical structure plays a critical role in the respiratory system, allowing air to move from the nasal passages into the trachea during inhalation and out during exhalation. Additionally, it helps in the process of swallowing, as it coordinates the movement of food from the mouth to the esophagus while simultaneously ensuring that air can flow to the lungs. This dual function of participation in both respiration and digestion showcases the importance of the pharynx in maintaining essential bodily functions.