What is the function of the epiglottis?

controls swallowing

creates sound

covers the windpipe when you swallow

makes air go into your windpipe.

The epiglottis is a flap of cartilage that covers the windpipe (trachea) when you swallow, preventing food and liquids from entering the airway. Its main function is to ensure that food and liquids go down the esophagus and into the stomach, while also keeping the airway clear for breathing.