Which part of the body prevents food from entering the larynx?

The epiglottis plays a crucial role in the swallowing process by acting as a flap that covers the larynx during swallowing. When food or liquids are taken in, the epiglottis closes off the larynx, which is the airway leading to the trachea and lungs. This prevents food from entering the respiratory tract, thereby directing it towards the esophagus instead.

This protective mechanism is essential to prevent choking and aspiration pneumonia from materials entering the airways, thus safeguarding respiratory function while allowing for safe ingestion. The functioning of the epiglottis is a key aspect of the body's ability to differentiate between pathways for air and food.