Digestive System

Upper Gastrointestinal Tract

What is the role of the esophagus in digestion?

The esophagus is a muscular tube approximately 10 inches (25 centimeters) long and 0.75 inches (2 centimeters) in diameter that allows solid food and liquids to pass from the pharynx to the stomach. It is lined with cells that secrete mucus to lubricate the tube and allow for smoother passage of food through the esophagus. Peristaltic action moves the food through the esophagus.


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