Pharynx opens into the trachea through

Pharynx opens into the trachea through larynx.

The pharynx is a structure that serves as a common passageway for both food and air in the human body. It allows for the passage of air from the nasal and oral cavities to the larynx (voice box) and then into the trachea (windpipe) for respiration. Simultaneously, the pharynx also enables the passage of food and liquids from the mouth to the esophagus (food pipe) for digestion.