What muscular passageway serves as a common passageway for both food and air?

The correct answer to this question is the pharynx. Most people refer to the pharynx as the throat. The pharynx is divided into three parts: the nasopharynx, oropharynx, and laryngopharynx. The pharynx aids the digestive system as the pathway for moving food from the mouth down to the esophagus, while its muscular walls assist in swallowing.

Additionally, the pharynx aids the respiratory system by allowing air from the nose and mouth to move down to the larynx in a process called breathing. Thus, the pharynx is the muscular passageway serves as a common passageway for both food and air.