The pharynx is a muscular tube that connects the mouth to the esophagus. The pharynx is part of both the digestive and respiratory part of many organizations. Since it passed the food to reach the esophagus, and air into the lungs. The epiglottis closes to arrange passage to the windpipe when swallowed food in order not to join foreign matter in it and drowning occurred. In humans, the pharynx also plays an important role in speaking, the production of speech.
