What is the role of the epiglottis?

The epiglottis plays a crucial role in the human body by acting as a flap that covers the opening of the windpipe (trachea) during swallowing. This prevents food and liquids from entering the respiratory tract, which could lead to choking or aspiration into the lungs. When you swallow, the epiglottis folds down over the trachea, directing food to the esophagus instead of allowing it to pass into the airway. This function is vital for ensuring that the respiratory and digestive systems operate effectively without interfering with one another. As such, its primary role is to protect the airway during swallowing, making the choice highlighting this function correct.