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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.
Pharynx is a vertical tube lying behind the nasal and oral cavity. Its walls are built from striated (voluntary) muscles, covered by mucosal layer on its inner side. The part of the pharynx lying behind the nasal cavity is called the nasopharynx (Lat. nasus = nose).