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The pharynx is an anatomical structure that functions in both respiration and digestion in the human body. In this lesson we will investigate the anatomy and physiology of the pharynx to gain an understanding of its importance and how it works.
The pharynx (figs. 53-1, 53-2, 53-3 and 53-4) is a fibromuscular tube lined by mucous membrane. The pharynx is the common channel for deglutition (swallowing) and respiration, and the food and air pathways cross each other in the pharynx. In the anesthetized patient, the passage of air through the pharynx is facilitated by extension of the neck.