What is the main function of the epiglottis?

The main function of the epiglottis is to protect the trachea during swallowing. The epiglottis is a flap of cartilage located at the root of the tongue, and it plays a crucial role in the respiratory and digestive systems. When a person swallows, the epiglottis closes over the trachea, preventing food and liquids from entering the airway. This protective mechanism ensures that the air passage remains open for breathing, while simultaneously allowing food and drink to be directed into the esophagus. By effectively sealing off the trachea, the epiglottis helps prevent choking and allows for safe swallowing, thus fulfilling its primary function.