The leaf-shaped flap that helps prevent food from entering the lower respiratory system is called?

The leaf-shaped flap that helps prevent food from entering the lower respiratory system is known as the epiglottis. Located at the base of the tongue, it plays a critical role during the process of swallowing. When a person swallows, the epiglottis folds down to cover the opening of the trachea (windpipe). This action ensures that food and liquids are directed toward the esophagus, thus preventing aspiration into the lungs, which can lead to choking or respiratory infections.

Understanding the function of the epiglottis is essential for recognizing how the body protects itself during digestion. Its proper operation is crucial for safe swallowing, as it acts as a gatekeeper, ensuring that the airway remains clear when not in use for breathing.